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走近VB.Net(一),VB中的族,类,对象(摘录部分MSDN)

时间: 2021-07-31 作者:daque

走近vb.net(一),vb中的族,类,东西 vb.net是面向东西(object-oriented)的,又称为物件(object)导向(oriented)。在vb.net中一切的变量典型都是鉴于object,而不是variantdim x as variant 会被晋级为 dim as object。即使你不领会东西,姑且你不妨把他领会为一段数据,他是本质生存于外存的,以是东西以称为范例(instance)而类(class)即是类型,他设置一群东西,是一个东西的集体,并设置本领分子。以是类不过一个设置,惟有在被证明为范例的东西(object instance)时本领简直 的挪用。 你在挪用其余的类分子时,弹堕落误的对话框诉求“object instace”,是由于没有证明一个范例的东西,你用一致证明变量的本领证明她们。如:dim formn as new form2 挪用form2的分子本领new创造了一个东西的范例。你增添了一个窗体而并不许在步调中表露出来,是动作一个类,它并不本质生存。而此刻运用formn.visible=true 就不妨象往日一律挪用,以是条条亨衢通北京。不过一个观念的变化,vb在幕后仍旧往日的vb。这个大概有人会异议我反vb的变量称为东西,即使你把变量动作一个南针,不如把他看作一个变量 如:dim s as string :dim in as integer :in=123:s=in.tostring(提防vb用“:” 示换行)。in是一个变量,在鉴于integer的类中已设置了tostring的本领。在此刻的vb中一切的本领都以这种办法内嵌于各别的类。以至囊括一切的api。固然vb仍旧扶助象往日一律地运用api,除去常用的32位数据典型long应被换为integer(msdn中称32位是最快的 )。你会发觉不简单,以至不许到达手段。这是由于vb.net觉得你不大概再运用api,而惟有情势上的扶助。 在vb.net中引入了“族”的的术语,即namespace,普遍译为称呼空间,推敲了几个钟点,我部分觉得在net中该当译为族比拟符合,名字的汇合表示在乎东西的空间,族实用于任何东西的空间,在万事万物皆比族而分,在人亦如许。故有“非我族类,其心必异” 之语。族不离类,类不离族,族居类之上。大师不妨计划一下,看是否有些原因。 在vb.net中把父类设置为族 ,已设置的族有很多,如system是最常用的族,system中包括的类简直容纳了体例的方上面面,而system较常用的子族有winforms(窗体),drawing(图形). 待设置的如一个工程,兴建一个工程,工程名即是族名。 由于winforms.form类,drawing.bitmap类是最常用的,而vs7中搜索的速率简直太慢,我把他节录在底下:固然即使你的英文很好,不妨到msdn中去搜索,由于是集成的ide,即使谁能把vb的扶助整治出来就好了,我对应用分子的本领作了少许发端的探究,我蓄意有英文好一点的把底下的一段英文译出来,即使如许的话,任何一个入门者,纵然不懂英文,看了我的系列作品。比较底下的winforms.form分子表,drawing.bitmap分子表,本领强的确定不妨在几天的内发端控制vb.net。.兴建一个工程,默许的就会有对winforms.form与 drawing.bitmap的证明。这个也是实行windows的图形界面包车型的士最要害的图径。一。system.winforms.form 的分子(form members)[注:1.凡证明“to be supplied”是msdn筹备在未来供给的空的文书档案(大局部文书档案都是空白的),以是没有翻译2.我只能翻译少许常用名目,不是我懒,我没有任何华文的参考,即使失误了就不太好3.凡证明“instance”的是诉求东西范例,在拙笔《vb.net题目集》有精细的证明4.其余如共享设置,基础语法等在我的系列作品中有精细的引见,这是就不需要反复了.................](一)。静态共享的属性[public static (shared) properties]activeform:归来暂时的震动窗体( gets the currently active form for this application.)(二)。东西结构器(public instance constructors)form constructor:初始化一个新的范例( initializes a new instance of the form class.)(三)。公用的东西(范例)属性(public instance properties)acceptbutton: indicates the button control on the form that when clicked, performs an action equivalent to when the user presses the enter key.accessibilityobject: (inherited from richcontrol) [to be supplied.]accessibledefaultactiondescription: (inherited from richcontrol) the default action description of the controlaccessibledescription: (inherited from richcontrol) the accessible description of the controlaccessiblename: (inherited from richcontrol) the accessible name of the controlaccessiblerole: (inherited from richcontrol) the accessible role of the controlactivecontrol: (inherited from containercontrol) indicates the active control on the container control.activemdichild: gets the active multiple document interface (mdi) child window.allowdrop: (inherited from richcontrol) the allowdrop property. if allowdrop is set to true then this control will allow drag and drop operations and events to be used.allowtransparency: (inherited from richcontrol) [to be supplied.]anchor: (inherited from richcontrol) the current value of the anchor property. the anchor property determines which edges of the control are anchored to the container's edges.autoscale: gets or sets a value indicating whether the form adjusts its size and scale its control to fit the height of the font used on the form.autoscroll: gets or sets a value indicating whether the form implements autoscrolling.autoscrollmargin: (inherited from scrollablecontrol) gets or sets the size of the auto-scroll margin.autoscrollminsize: (inherited from scrollablecontrol) gets or sets the mimimum size of the auto-scroll.autoscrollposition: (inherited from scrollablecontrol) gets or sets the location of the auto-scroll position.backcolor: the background color of this control. this is an ambient property and will always return a non-null value. backcolor树立窗体的背局面。backgroundimage: (inherited from richcontrol) the background image of the control.backgroundimage树立窗体的后台图片bindingmanager: (inherited from richcontrol) [to be supplied.]bindings: (inherited from richcontrol) retrieves the bindings for this control.borderstyle: gets or sets the border style of the form.borderstyle树立窗体的表面(边框,题目栏)bottom: (inherited from control) the bottom coordinate of this control.bounds: (inherited from control) the bounds of this control. this is the window coordinates of the control in parent client coordinates.cancelbutton: gets or sets the button control that when clicked, performs an action equivalent to when the user presses the esc key.这个是设定哪一个button按钮相应esc键canfocus: (inherited from control) indicates whether the control can receive focus. this property is read-only. 指定控件能否不妨接收中心,read-only表白他是只读的。不许在运转功夫窜改。canselect: (inherited from control) indicates whether the control can be selected. this property is read-only. 指定控件能否不妨被选定,read-only表白他是只读的。不许在运转功夫窜改。capture: (inherited from control) indicates whether the control has captured the mouse. 这个归来一个布尔值,指定能否捕捉鼠标。常常咱们要挪动一个无题目栏的窗体,须要在按下鼠目标功夫放鼠标捕捉 如:me.capture=false. 他的效率跟vb6的api 因变量---releasecapture 。然而用起来简单得多causesvalidation: (inherited from control) indicates whether entering the control causes validation on the controls requiring validation.clientrectangle: (inherited from control) the client rect of the control. 用户界面属性clientsize: gets or sets the size of the client area of the form. 用户界面尺寸companyname: (inherited from richcontrol) retrieves the company name of this specific component.containsfocus: (inherited from control) indicates whether the control or one of its children currently has the system focus. this property is read-only.contextmenu: (inherited from richcontrol) the contextmenu associated with this control. the contextmenu will be shown when the user right clicks the mouse on the control. 指定在右键弹击时弹出那一个菜单,普遍不妨在属性窗口的下拉列表当选定controlbox: gets or sets a value indicating whether a control box is displayed in the title bar of the form.controls: (inherited from control) collection of child controls.created: (inherited from control) indicates whether the control has been created. this property is read-only.cursor: (inherited from richcontrol) retrieves the cursor that will be displayed when the mouse is over this control. 自设置光标。 设置当鼠标在控件上方的光标款式desktopbounds: gets or sets the size and location of the form on the windows desktop. 归来或树立窗体在桌面包车型的士范畴desktoplocation: gets or sets the location of the form on the windows desktop. 归来或树立窗体在桌面包车型的士场所dialogresult: gets or sets the dialog result for the form.displayrectangle: (inherited from control) returns the client rect of the display area of the control. for the base control class, this is identical to getclientrect. however, inheriting controls may want to change this if their client area differs from their display area. 窗体表露区块disposed: (inherited from control) indicates whether the control has been disposed. this property is read-only.能否这个控件已被废除disposing: (inherited from control) indicates whether the control is in the process of being disposed. this property is read-only.dock: (inherited from richcontrol) the dock property. the dock property controls to which edge of the container this control is docked to. for example, when docked to the top of the container, the control will be displayed flush at the top of the container, extending the length of the container.dockpadding: (inherited from scrollablecontrol) gets the dock padding settings for all edges of the control.enabled: (inherited from control) indicates whether the control is currently enabled.focused: (inherited from control) indicates whether the control has focus. this property is read-only. 窗体能否已遗失中心font: (inherited from richcontrol) retrieves the current font for this control. this will be the font used by default for painting and text in the control. 字体forecolor: (inherited from richcontrol) the foreground color of the control. 前局面(字体脸色)handle: (inherited from control) the hwnd handle that this control is bound to. if the handle has not yet been created, this will force handle creation. handle 归来控件的句柄height: (inherited from control) the height of this control 窗体莫大helpbutton: gets or sets a value indicating whether a help button is displayed in the title bar of the form.icon gets or sets the icon for the form.imemode: (inherited from richcontrol) specifies a value that determines the ime (input method editor) status of the object when that object is selected. 指定一个控件被用户选准时默许震动的输出法invokerequired: (inherited from richcontrol) [to be supplied.]isaccessible: (inherited from richcontrol) indicates whether or not this control is an accessible control i.e. whether it should be visible to accessibility applications.ishandlecreated: (inherited from control) whether or not this control has a handle associated with it.ismdichild: gets a value indicating whether the form is a multiple document interface (mdi) child form.ismdicontainer: gets or sets a value indicating whether the form is a container for multiple document interface (mdi) child forms.keypreview: gets or sets a value indicating whether the form receives key events before the event is passed to the control that has focus.这个与vb6的样,归来或树立一个值,指定能否在控件键盘事变爆发前实行窗体的键盘事变left: (inherited from control) the left coordinate of this control. 控件左边的坐标隔绝location: (inherited from control) the location of this control. 场所maximizebox: gets or sets a value indicating whether the maximize button is displayed in the title bar of the form.mdichildren: gets an array of forms that represent the multiple document interface (mdi) child forms that are parented by this form.mdiparent: indicates the multiple document interface (mdi) parent form of this form.menu: gets or sets the mainmenu that is displayed in the form. 树立窗体运用哪一个主菜单mergedmenu gets the merged menu for the form.minimizebox gets or sets a value indicating whether the minimize button is displayed in the title bar of the form.modal gets a value indicating whether this form is displayed modally. 能否一个窗体是模态窗体。opacity: (inherited from richcontrol) [to be supplied.] opacity的效率不小,树立窗体的通明水平,如me.opacity=0.68 ownedforms gets an array of form objects that represents all forms that are owned by this form.owner gets or sets the form that owns this form.parent (inherited from control) the parent of this control.parentform the form that is the parent of this form.productname (inherited from richcontrol) retrieves the product name of this specific component.productversion (inherited from richcontrol) retrieves the product version of this specific component.recreatinghandle (inherited from control) indicates whether the control is currently recreating its handle. this property is read-only.region (inherited from richcontrol) the region associated with this control. (defines the outline/silhouette/boundary of control) region 是结构窗体的表面了,这在我的作品《走近vb.net(十一)得心应手窗体表面中》有简直的用法right (inherited from control) the right coordinate of the control. 窗体右坐标righttoleft (inherited from richcontrol) this is used for international applications where the language is written from righttoleft. when this property is true, control placement and text will be from right to left.showfocuscues (inherited from control) indicates whether the user interface is in a state to show or hide focus rectangles. this property is read-only.showintaskbar indicates whether a form is displayed in the windows taskbar. 树立能否表露在windows的工作栏showkeyboardcues (inherited from control) indicates whether the user interface is in a state to show or hide keyboard accelerators. this property is read-only.site (inherited from marshalbyrefcomponent) gets or sets the site of the component.size gets or sets the size of the form.sizegripstyle gets or sets the style of sizing handle to display in the lower-right corner of the form.startposition gets or sets the initial position of the form at run time. 归来或树立窗体启用时的场所tabindex (inherited from control) the tab index of this control. tab键的排序tabstop (inherited from control) indicates whether the user can give the focus to this control using the tab key. this property is read-only. 能否接收tab键的中心,这也是一个只读属性text (inherited from control) the current text associated with this control. 所表露的文本实质top (inherited from control) top coordinate of this control 极点坐标.toplevel gets or sets a value indicating whether to display the form as a top-level window.toplevelcontrol (inherited from control) the top level control that contains this control. this doesn't have to be the same as the value returned from getform since forms can be parented to other controls.topmost gets or sets a value indicating whether the form is displayed as the top-most form of your application. topmost设置能否使一个窗体能否一直在最前方表露transparencykey gets or sets the color that represents transparent areas on the form.visible gets or sets a value indicating whether the form is visible. 归来或树立一个控件能否看来。width (inherited from control) the width of this control. 控件的宽窄windowstate gets or sets the form's window state. 归来或树立窗体暂时状况(四)公用的东西(范例)本领(public instance methods)activate activates the form and gives it focus. 激活窗体activatecontrol (inherited from containercontrol) activates a specified control. 激活指定的控件addownedform adds an owned form to this form.begininvoke (inherited from richcontrol) overloaded. [to be supplied.]bringtofront (inherited from control) brings this control to the front of the zorder.callwndproc (inherited from control) dispatch the method to this window's wndproc directly.close closes the form. 封闭这个窗体contains (inherited from control) verifies if a control is a child of this control.createcontrol (inherited from control) forces the creation of the control. this includes the creation of the handle, and any child controls.creategraphics (inherited from richcontrol) overloaded. [to be supplied.]dispose (inherited from containercontrol) disposes of the resources (other than memory) used by the containercontrol.开释占用的资源dodragdrop (inherited from richcontrol) begins a drag operation. the allowedeffects determine which drag operations can occur. if the drag operation needs to interop with applications in another process, data should either be a base managed class (string, bitmap, or metafile) or some object that implements system.componentmodel.ipersistable. data can also be any object that implements system.winforms.idataobject.endinvoke (inherited from richcontrol) retrieves the return value of the asynchronous operation represented by the iasyncresult interface passed. if the async operation has not been completed, this function will block until the result is available.equals (inherited from object) determines whether the specified object is the same instance as the current object.findform (inherited from richcontrol) retrieves the form that this control is on. the control's parent may not be the same as the form.focus (inherited from control) sets focus to the control. attempts to set focus to this control. 树立控件的中心,不要报告我领会!getchildatpoint (inherited from control) retrieves the child control that is located at the specified client coordinates.getcontainer (inherited from marshalbyrefcomponent) gets the container for the component.getcontainercontrol (inherited from control) returns the closest containercontrol in the control's chain of parent controls and forms.getdesignmode (inherited from marshalbyrefcomponent) gets a value indicating whether the component is currently in design mode.gethashcode (inherited from object) serves as a hash function for a particular type, suitable for use in hashing algorithms and data structures like a hash table.getlifetimeservice (inherited from marshalbyrefobject) this method is used return a lifetime service object that is used to control the lifetime policy to the object. for the default lifetime service this will be an object of type ilease.getnextcontrol (inherited from control) retrieves the next control in the tab order of child controls.getserviceobject (inherited from marshalbyrefcomponent) gets the implementer of the iserviceobjectprovider.gettype (inherited from object) gets the type of the object. 归来一东西的类hide (inherited from control) hides the control by setting the visible property to false; 湮没一控件initializelifetimeservice (inherited from marshalbyrefobject) object can provide their own lease and so control their own lifetime. they do this by overriding the initializelifetimeservice method provided on marshalbyrefobjectinvalidate (inherited from control) overloaded. [to be supplied.]invoke (inherited from richcontrol) overloaded. [to be supplied.]layoutmdi arranges the multiple document interface (mdi) child forms of this form.performlayout (inherited from control) overloaded. [to be supplied.]pointtoclient gets the client coordinates for a specified location. 归来一个用户界面包车型的士坐标pointtoscreen gets the screen coordinates for a specified location. 归来一个屏幕坐标preprocessmessage (inherited from control) called by the application's message loop to pre-process input messages before they are dispatched.rectangletoclient gets the client coordinates and size of a specified rectangle. 归来一个矩形的用户界面坐标rectangletoscreen gets the client coordinates and size for a specified rectangle. 归来一个一个矩形的屏幕坐标refresh (inherited from control) forces the control to invalidate and immediately repaint itself and any children. 重画窗体removeownedform removes a form from the list of owned forms. also sets the owner of the removed form to a null reference (in visual basic nothing).resetbackcolor (inherited from richcontrol) resets the back color to be based on the parent's back color.resetbindings (inherited from richcontrol) [to be supplied.]resetcursor (inherited from richcontrol) [to be supplied.]resetfont (inherited from richcontrol) resets the font to be based on the parent's font.resetforecolor (inherited from richcontrol) resets the fore color to be based on the parent's fore color.resetrighttoleft (inherited from richcontrol) resets the righttoleft to be the default.resettext (inherited from control) resets the text to it's default value.resumelayout (inherited from control) overloaded. resumes normal layout logic.scale (inherited from control) overloaded. scales the control and any child controls.select (inherited from control) activates this control.selectnextcontrol (inherited from control) selects the next control following ctl.sendmessage (inherited from control) overloaded. sends a win32 message to the control.sendtoback (inherited from control) sends this control to the back of the z-ordersetautoscrollmargin (inherited from scrollablecontrol) sets the size of the auto-scroll margins.setbounds (inherited from control) overloaded. sets the bounds of the control.setclientsize (inherited from control) sets the height and width of the client area of the control.setdesktopbounds sets the bounds of the form in desktop coordinates.setdesktoplocation sets the location of the form in desktop coordinates.setlocation (inherited from control) sets the location of this control.setnewcontrols arranges an array of controls on a form.setsize (inherited from control) sets the size of this control.shouldpersistautoscrollmargin (inherited from scrollablecontrol) indicates whether the autoscrollmargin property should be persisted.shouldpersistautoscrollminsize (inherited from scrollablecontrol) indicates whether the autoscrollminsize property should be persisted.shouldpersistautoscrollposition (inherited from scrollablecontrol) indicates whether the autoscrollposition property should be persisted.shouldpersistbackcolor indicates whether the backcolor property should be persisted.shouldpersistbindings (inherited from richcontrol) [to be supplied.]shouldpersistcursor (inherited from richcontrol) returns true if the cursor should be persisted in code gen.shouldpersistfont (inherited from richcontrol) returns true if the font should be persisted in code gen.shouldpersistforecolor indicates whether the forecolor property should be persisted.shouldpersisticon indicates whether the icon property should be persisted.shouldpersistlocation (inherited from control) determines if the location property needs to be persisted.shouldpersistrighttoleft (inherited from richcontrol) returns true if the righttoleft should be persisted in code gen.shouldpersistsize (inherited from control) determines if the size property needs to be persisted.shouldpersisttext (inherited from control) determines if the text property needs to be persisted.shouldpersisttransparencykey indicates whether the transparencykey property should be persisted.show (inherited from control) makes the control display by setting the visible property to trueshowdialog overloaded. displays this form as a modal dialog box.suspendlayout (inherited from control) suspends the layout logic for the control.tostring (inherited from object) returns a string that represents the current object.update (inherited from control) forces the control to paint any currently invalid areas.validate (inherited from containercontrol) validates the last unvalidated control and it's ancestors up through, but not including, the current control.(五)公用的东西(范例)事变(public instance events):万万不要跟我说不懂什么是事变(用户操纵,如单击-click,鼠标摆脱mouseleave,请参考vb6 材料)然而象mouseleave往日是没有的,再有参数也各别,我的关系作品写得很领会,这一节就跳过activated occurs when the form is activated in code or by the user.changeuicues (inherited from control) occurs when focus or keyboard or both cues have changed.click (inherited from control) occurs when the control is clicked.closed occurs when the form is closed.closing occurs when the form is closing.controladded (inherited from control) occurs when a new control is added.controlremoved (inherited from control) occurs when a control is removed.deactivate occurs when the form loses focus and is not the active form.doubleclick (inherited from control) occurs when the control is double clicked.dragdrop (inherited from richcontrol) [to be supplied.]dragenter (inherited from richcontrol) [to be supplied.]dragleave (inherited from richcontrol) [to be supplied.]dragover (inherited from richcontrol) [to be supplied.]enter (inherited from control) occurs when the control is entered.givefeedback (inherited from richcontrol) [to be supplied.]gotfocus (inherited from control) occurs when the control receives focus.handlecreated (inherited from control) occurs when a handle is created for the control.handledestroyed (inherited from control) occurs when the control's handle is destroyed.helprequested (inherited from richcontrol) [to be supplied.]inputlangchange occurs after the input language of the form has changed.inputlangchangerequest occurs when the the user attempts to change the input language for the form.invalidated (inherited from richcontrol) [to be supplied.]keydown (inherited from control) occurs when a key is pressed down while the control has focus.keypress (inherited from control) occurs when a key is pressed while the control has focus.keyup (inherited from control) occurs when a key is released while the control has focus.layout (inherited from control) occurs when a control's layout properties have been changed.leave (inherited from control) occurs when the control is left.lostfocus (inherited from control) occurs when the control loses focus.mdichildactivate occurs when a multiple document interface (mdi) child form is activated or closed within an mdi application.menucomplete occurs when a menu in a form loses focus.menustart occurs when a menu in a form receives focus.mousedown (inherited from control) occurs when the mouse pointer is over the control and a mouse button is pressed.mouseenter (inherited from control) occurs when the mouse pointer enters the control.mousehover (inherited from control) occurs when the mouse pointer hovers over the contro.mouseleave (inherited from control) occurs when the mouse pointer leaves the control.mousemove (inherited from control) occurs when the mouse pointer is moved over the control.mouseup (inherited from control) occurs when the mouse pointer is over the control and a mouse button is released.mousewheel (inherited from control) occurs when the mouse wheel moves while the control has focus.move (inherited from control) occurs when the control is moved.paint (inherited from richcontrol) [to be supplied.]propertychanged (inherited from control) occurs when a property of the control has changed.queryaccessibilityhelp (inherited from richcontrol) [to be supplied.]querycontinuedrag (inherited from richcontrol) [to be supplied.]resize (inherited from control) occurs when the control is resized.validated (inherited from control) occurs when the control is done validating.validating (inherited from control) occurs when the control is validating.(六)族内共享属性(protected instance properties)大略的说一个大类囊括两个小类,这个大类即是一个族,小类即是分子了。canraiseevents (inherited from richcontrol) [to be supplied.]createparams (inherited from richcontrol) returns the createparams used to create the handle for this control. inheriting classes should call base.createparams in the manor below:events (inherited from marshalbyrefcomponent) gets the list of event handlers that are attached to this component.fontheight (inherited from richcontrol) [to be supplied.]hscroll (inherited from scrollablecontrol) gets or sets a value indicating whether the horizontal scroll bar is visible.internalhandle (inherited from control) returns the current value of the handle. this may be zero if the handle has not been created.maximizedbounds gets the size of the form when it is maximized.maxtracksize gets the maximum size to which the form can be resized.mintracksize gets the minimum size the form can be resized to.renderrighttoleft (inherited from richcontrol) [to be supplied.]vscroll (inherited from scrollablecontrol) gets or sets a value indicating whether the vertical scroll bar is visible.windowtext (inherited from control) indicates the current text of the window.族内共享的东西(范例)属性(protected instance methods)adjustformscrollbars (inherited from scrollablecontrol) adjusts the auto-scroll bars on the container based on the current control positions and the control currently selected.assignparent (inherited from richcontrol) assigns a new parent control. sends out the appropriate property change notifications for properties that are affected by the change of parent.createaccessibilityinstance (inherited from richcontrol) constructs the new instance of the accessibility object for this control. subclasses should not call base.createaccessibilityobject.createcontrolsinstance (inherited from richcontrol) constructs the new instance of the controls collection objects. subclasses should not call base.createcontrolsinstance.createhandle (inherited from control) creates a handle for this control. this method is called by the .net framework, this should not be called. inheriting classes should always call base.createhandle when overriding this method.defwndproc (inherited from control) sends the message to the default window proc.destroyhandle (inherited from richcontrol) [to be supplied.]finalize (inherited from object) allows an object to attempt to free resources and perform other cleanup operations before the object is reclaimed by the garbage collector (gc). this method may be ignored by the common language runtime; therefore, necessary cleanup operations should be done elsewhere.getstyle (inherited from control) retrieves the current value of the specified bit in the control's style. note: this is control style, not the win32 style of the hwnd.initlayout (inherited from richcontrol) called after the control has been added to another container.invokegotfocus (inherited from control) raises the gotfocus event.invokelostfocus (inherited from control) raises the lostfocus event.invokeonclick (inherited from control) raises the click event.invokepaint (inherited from richcontrol) [to be supplied.]invokepaintbackground (inherited from richcontrol) [to be supplied.]isinputchar (inherited from control) determines if charcode is an input character that the control wants.isinputkey (inherited from control) determines if keydata is an input key that the control wants.memberwiseclone (inherited from object) creates a shallow copy of the current object.notifyinvalidate (inherited from richcontrol) [to be supplied.]onactivated raises the activated event.onchangeuicues (inherited from control) raises the changeuicues event.onclick (inherited from control) raises the click event.onclosed raises the closed event.onclosing raises the closing event.oncontroladded (inherited from control) raises the controladded event.oncontrolremoved (inherited from control) raises the controlremoved event.oncreatecontrol (inherited from control) called when the control is first created.ondeactivate raises the deactivate event.ondoubleclick (inherited from control) raises the doubleclick event.ondragdrop (inherited from richcontrol) inheriting classes should override this method to handle this event. call base.ondragdrop to send this event to any registered event listeners.ondragenter (inherited from richcontrol) inheriting classes should override this method to handle this event. call base.ondragenter to send this event to any registered event listeners.ondragleave (inherited from richcontrol) inheriting classes should override this method to handle this event. call base.ondragleave to send this event to any registered event listeners.ondragover (inherited from richcontrol) inheriting classes should override this method to handle this event. call base.ondragover to send this event to any registered event listeners.onenter (inherited from control) raises the enter event.ongivefeedback (inherited from richcontrol) inheriting classes should override this method to handle this event. call base.ongivefeedback to send this event to any registered event listeners.ongotfocus (inherited from richcontrol) [to be supplied.]onhandlecreated (inherited from richcontrol) inheriting classes should override this method to find out when the handle has been created. call base.onhandlecreated first.onhandledestroyed (inherited from richcontrol) inheriting classes should override this method to find out when the handle is about to be destroyed. call base.onhandledestroyed last.onhelprequested (inherited from richcontrol) inheriting classes should override this method to handle this event. call base.onhelp to send this event to any registered event listeners.oninputlangchange raises the inputlangchange event.oninputlangchangerequest raises the inputlangchangerequest event.oninvalidated (inherited from richcontrol) inheriting classes should override this method to handle this event. call base.oninvalidate to send this event to any registered event listeners.onkeydown (inherited from control) raises the keydown event.onkeypress (inherited from control) raises the keypress event.onkeyup (inherited from control) raises the keyup event.onlayout (inherited from richcontrol) core layout logic. inheriting controls should override this function to do any custom layout logic. it is not neccessary to call base.layoutcore, however for normal docking and anchoring functions to work, base.layoutcore must be called.onleave (inherited from control) raises the leave event.onlostfocus (inherited from richcontrol) [to be supplied.]onmdichildactivate overloaded. [to be supplied.]onmenucomplete raises the menucomplete event.onmenustart raises the menustart event.onmousedown (inherited from control) raises the mousedown event.onmouseenter (inherited from control) raises the mouseenter event.onmousehover (inherited from control) raises the mousehover event.onmouseleave (inherited from control) raises the mouseleave event.onmousemove (inherited from control) raises the mousemove event.onmouseup (inherited from control) raises the mouseup event.onmousewheel (inherited from control) raises the mousewheel event.onmove (inherited from control) raises the move event.onpaint (inherited from richcontrol) inheriting classes should override this method to handle this event. call base.onpaint to send this event to any registered event listeners.onpaintbackground (inherited from richcontrol) inheriting classes should override this method to handle the erase background request from windows. it is not necessary to call base.onpaintbackground, however if you do not want the default windows behavior you must set event.handled to true.onparentpropertychanged (inherited from richcontrol) this method is called by the parent control when any property changes on the parent. this can be overriden by inheriting classes, however they must call base.onparentpropertychanged.onpropertychanged (inherited from richcontrol) [to be supplied.]onquerycontinuedrag (inherited from richcontrol) inheriting classes should override this method to handle this event. call base.onquerycontinuedrag to send this event to any registered event listeners.onresize (inherited from control) raises the resize event.onvalidated (inherited from control) raises the validated event.onvalidating (inherited from control) raises the validating event.parentchanged (inherited from control) called by the .net framework after a control's parent changes. this allows (for example) child controls to automatically hook events on their parent, giving better encapsulation.processcmdkey (inherited from richcontrol) [to be supplied.]processdialogchar (inherited from control) processes a dialog character.processdialogkey (inherited from control) processes a dialog key.processkeyeventargs (inherited from control) processes a key message.processkeypreview (inherited from control) previews a keyboard message.processmnemonic (inherited from control) processes a mnemonic character.processtabkey (inherited from containercontrol) selects the next available control and makes it the active control.raisedrageventargs (inherited from richcontrol) raises the event associated with key with the event data of e and a sender of this control.raisekeyeventargs (inherited from control) raises the event associated with key with the event data of e and a sender of this control.raisemouseeventargs (inherited from control) raises the event associated with key with the event data of e and a sender of this control.raisepainteventargs (inherited from richcontrol) raises the event associated with key with the event data of e and a sender of this control.raisepropertychangedevent (inherited from control) raises the property changed event. this creates the needed event data and then calls onpropertychanged.recreatehandle (inherited from control) forces the recreation of the handle for this control. inheriting controls must call base.recreatehandle.resumelayout (inherited from control) overloaded. resumes normal layout logic.rtltranslatealignment (inherited from richcontrol) overloaded. [to be supplied.]rtltranslatecontent (inherited from richcontrol) [to be supplied.]rtltranslatehorizontal (inherited from richcontrol) [to be supplied.]rtltranslateleftright (inherited from richcontrol) [to be supplied.]scalecore (inherited from control) performs the work of scaling the entire control and any child controls.sendmessage (inherited from control) overloaded. sends a win32 message to the control.这是vb6中最驰名的api动静因变量了,我把这个api的华文扶助附录于下,只有第一个参数不byval hwnd as long不必即是了declare function sendmessage& lib "user32" alias "sendmessagea" (byval hwnd as long, byval wmsg as long, byval wparam as long, lparam as any)证明 挪用一个窗口的窗口因变量,将一条动静发给谁人窗口。只有动静处置结束,要不该因变量不会归来。sendmessagebynum, sendmessagebystring是该因变量的“典型安定”证明情势 归来值 long,由简直的动静确定 参数表 参数 典型及证明 hwnd long,要接受动静的谁人窗口的句柄 wmsg long,动静的操作符 wparam long,简直在于于动静 lparam any,简直在于于动静 运用如次:me.sendmessage( byval wmsg as long, byval wparam as long, lparam as any)至如怎样设定参数,就参考vb6.的少许源代码了,底下是一个拖动无题目栏窗体的用法:private sub form1_mousedown(byval eventsender as object, byval e as system.winforms.mouseeventargs) 'mousedown的事变中窗体中的下拉列表是找不到的,本人写一个吧,加上(byval eventsender as object, byval e as system.winforms.mouseeventargs)即可 '底下的代码使窗体不妨拖动 me.capture() = false '开释鼠标捕捉,同等于api的releasecapture() me.sendmessage(&ha1s, 2, 0) '唔,这个即是哪个sendmessage的api了,不过第一个句柄参数不复用了。 end sub 咱们连接往下看:setboundscore (inherited from richcontrol) [to be supplied.]setclientsizecore (inherited from control) performs the work of setting the size of the client area of the control.setstyle (inherited from control) sets the current value of the specified bit in the control's style. note: this is control style, not the win32 style of the hwnd.updatebounds (inherited from control) overloaded. updates the bounds of the control.updatestyles (inherited from control) forces styles to be reapplied to the handle. this function will call createparams to get the styles to apply.updatezorder (inherited from control) updates this control in it's parent's zorder.wndproc [to be supplied.]wndprocexception (inherited from richcontrol) [to be supplied.]二。system.drawing.bitmap的分子(bitmap members)[注:1.凡证明“to be supplied”是msdn筹备在未来供给的空的文书档案,以是不翻译2.我只能翻译少许常用名目,不是我懒,我没有任何华文的参考,即使失误了就不太好3.凡证明“instance”的是诉求东西范例,在拙笔《vb.net题目集》有精细的证明4.其余如共享设置,基础语法等在我的系列作品中有精细的引见,这是就不需要反复了.................](一)。静态共享本领fromhicon: creates a bitmap from a windows handle to an icon. 从一个图目标句柄建立一个bitmap东西 在vb.net中在本领中常常运用from-前缀代办从一个源获得,而运用to-前缀到一个手段东西fromresource: [to be supplied.](二)东西结构器(public instance constructors)bitmap constructor overloaded. 初始化一个新的范例(initializes a new instance of the bitmap class.)(三)公用的东西(范例)属性(public instance properties)flags (inherited from image) gets attribute flags for this image.framedimensionslist (inherited from image) gets an array of guids that represent the dimensions of frames within this image.height (inherited from image) gets the height of this image. 归来图片的莫大horizontalresolution (inherited from image) gets the horizontal resolution, in pixels-per-inch, of this image.palette (inherited from image) gets or sets the color palette used for this image.physicaldimension (inherited from image) gets the width and height of this image.pixelformat (inherited from image) gets the pixel format for this image.propertyidlist (inherited from image) gets an array of the property ids stored in this image.propertyitems (inherited from image) gets an array of propertyitem objects that describe this image.rawformat (inherited from image) gets the format of this image.size (inherited from image) gets the width and height of this image. 归来图片的尺寸verticalresolution (inherited from image) gets the vertical resolution, in pixels-per-inch, of this image.width (inherited from image) gets the width of this imaege. 归来图片的宽窄(四)公用的东西(范例)本领clone: (inherited from image) creates an exact copy of this image.dispose: (inherited from image) cleans up windows resources for this image. 这个真有一点象vb6的unload,然而dispose的用途大多了,再说一篇即是废除资源占用。equals: (inherited from object) determines whether the specified object is the same instance as the current object.getbounds: (inherited from image) gets a bounding rectangle in the specified units for this image.getencoderparameterlist: (inherited from image) returns information about the codecs used for this image.getframecount: (inherited from image) returns the number of frames of the given dimension.gethashcode: (inherited from object) serves as a hash function for a particular type, suitable for use in hashing algorithms and data structures like a hash table.gethbitmap: overloaded. creates a win32 hbitmap out of the image. you are responsible for de-allocating the hbitmap with windows.deleteobject(handle). if the image uses transparency, the background will be filled with the specified background color. 获得位图句柄,这个用起来有点烦恼,幸亏我的作品中有了gethicon: returns the handle to an icon 获得图标句柄 getlifetimeservice: (inherited from marshalbyrefobject) this method is used return a lifetime service object that is used to control the lifetime policy to the object. for the default lifetime service this will be an object of type ilease.getpixel: gets the color of the specified pixel in this bitmap. 获得一个像素的color值,这个东东效率不小,不要轻看了他。getpropertyitem: (inherited from image) gets the specified property item from this image.getthumbnailimage (inherited from image) returns the thumbnail for this image.gettype (inherited from object) gets the type of the object. 归来东西的类initializelifetimeservice (inherited from marshalbyrefobject) object can provide their own lease and so control their own lifetime. they do this by overriding the initializelifetimeservice method provided on marshalbyrefobjectlockbits locks a bitmap into system memory.maketransparent overloaded. makes a color transparent for this bitmap.removepropertyitem (inherited from image) removes the specified property item from this image.save (inherited from image) overloaded. saves this image to a file. 生存图片到文献saveadd (inherited from image) overloaded. adds an encoderparameters to this image.selectactiveframe (inherited from image) selects the frame specified by the given dimension and index.setpixel sets the color of the specified pixel in this bitmap. 树立一个像素的color值 setpropertyitem (inherited from image) sets the specified property item to the specified value.setresolution sets the resolution for this bitmap.tostring (inherited from object) returns a string that represents the current object. 转到字符类unlockbits unlocks this bitmap from system memory.(五)族内共享的东西(范例)属性:(protected instance methods)finalize (inherited from image) cleans up windows resources for this image.memberwiseclone (inherited from object) creates a shallow copy of the current object.底下运用举例证明怎样运用:兴建一个工程,你会看到以次代码:imports system.componentmodelimports system.drawingimports system.winforms证明:imports(援用族名) 在c#中为using, 在c++中为namespace,效率是一律的,这只是是一个语法,并不是需要的挪用,你实足不妨不运用这个要害字,保持不妨运用一切的族。不过system.drawing,bitmap在运用了imports system.drawing此后你不妨简写为bitmap。固然你保持不妨写为system.drawing.bitmappublic class form1inherits system.winforms.form证明:inherits 是接受的道理,如许你不妨象运用system.winforms.form一律运用form已有的分子你不妨如许:me.backcolor = system.drawing.color.blackme.backcolor是system.winforms.form的分子,由于接受,form1也获得了这个分子,然而由于他归来的值是颜色,而颜色是属于图形的,你该当在system.draw中去找,截止你找到了system.drawing.color,以是me.backcolor的值的数据是system.draw.color。在color反面办理,展示提醒,有你想要的颜色,与挪用,窜改颜色的本领,因变量。black即是玄色了,这个总比往日的十六进制要直觉得多吧。即使你想证明一个变量生存这个值,确定要证明为:dim colorval as system.drawing.color 而不是 dim colorval as string,一切的类都不妨如许证明。至于怎样挪用其余的少许不许径直挪用的因变量的题目,不妨参考我的作品《vb.net题目集》底下是一个例子:1. 兴建一个工程,不妨参考我的作品《vb.net举证初学》2. 增添picturebox控件在属性栏的backgroundimage属性中引入一幅后台图,拖动他使他比图片小一点点,3. 树立窗体的题目栏borderstyle为0,窗体的巨细与picturebox一律大4. 请在代码发端处写入option strict off,封闭option strict使后台图片(system.drawing.image)不妨运用system.drawing.bitmap类5. 写代码如次:protected sub picturebox1_click(byval sender as object, byval e as system.eventargs)dim pcolor as system.drawing.colordim strpc as stringpcolor = getpixelstrpc = pcolor.tostring‘tostring的效率是丛system.drawing.color的数据典型变换为string典型system.winforms.messagebox.show("暂时像素的rgb" & strpc, "我的第一个vb.net步调", messagebox.ok bitor messagebox.iconasterisk)‘messagebox是winforms的一个子类,主对话框的挪用messagebox的分子凡以icom为前缀的是图目标挪用end subpublic function getpixel() as system.drawing.colordim pm as system.drawing.bitmappm = picturebox1.backgroundimage‘即使这边堕落是由于没有运用option strict offreturn pm.getpixel(pixx, pixy)end functionpublic sub picturebox1_mousemove(byval sender as object, byval e as system.winforms.mouseeventargs) handles picturebox1.mousemovepixx = e.xpixy = e.y将之上代码粘贴到#region " windows form designer generated code "到#end region这段代码的反面按f5运转一下,这么一点代码就不妨捕捉图片任何一点的颜色。即使偶尔vb没有能相应键盘的有些键,请从新启用,这大约是beta版的bug吧。

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