vb.net光標(biāo)處句柄 vb中光標(biāo)定位
VB.NET里怎么得到 當(dāng)前應(yīng)用程序句柄?
Visual Basic .NET 中 App 對象的更改
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在 Visual Basic 6.0 中，App 對象是用于設(shè)置或檢索應(yīng)用程序信息的全局對象。Visual Basic .NET 中沒有 App 對象的直接等效項(xiàng)；然而它的大部分屬性可以映射為 .NET Framework 中的等效屬性。在 Visual Basic 6.0 中，App 對象是用于設(shè)置或檢索應(yīng)用程序信息的全局對象。Visual Basic .NET 中沒有 App 對象的直接等效項(xiàng)；然而它的大部分屬性可以映射為 .NET Framework 中的等效屬性。
VB6.0 App.HInstance 在VB.net中的表達(dá)參考以下內(nèi)容：
System.Runtime.InteropServices.Marshal.GetHINSTANCE(System.Reflection.Assembly.GetExecutingAssembly.GetModules()(0)).ToInt32
在vb.net中什么是窗口句柄 高手用通俗語言解釋
句柄是 Windows 系統(tǒng)中的概念，和VB.NET無關(guān)。
通俗地講，句柄就是一個(gè)數(shù)字，也就是一個(gè)編號。
比如說，你電腦中有10個(gè)窗口，每個(gè)窗口都會有一個(gè)編號，這是操作系統(tǒng)區(qū)分各個(gè)窗口的依據(jù)
求vb.net句柄實(shí)例，實(shí)現(xiàn)操作其他程序窗口。如我給的例子
Imports?System.Text
Imports?System.Runtime.InteropServices
Public?Class?Form1
'?相關(guān)API函數(shù)聲明,注釋掉的這里沒用到，但是也比較常用吧，這些函數(shù)的功能都能搜到。
Private?Declare?Function?FindWindow?Lib?"user32"?Alias?"FindWindowA"?(ByVal?lpClassName?As?String,?ByVal?lpWindowName?As?String)?As?IntPtr
Private?Declare?Function?FindWindowEx?Lib?"user32"?Alias?"FindWindowExA"?(ByVal?hWnd1?As?IntPtr,?ByVal?hWnd2?As?IntPtr,?ByVal?lpsz1?As?String,?ByVal?lpsz2?As?String)?As?IntPtr
Private?Delegate?Function?EnumChildProc(ByVal?hWnd?As?IntPtr,?ByVal?lParam?As?Integer)?As?Boolean
Private?Declare?Function?EnumChildWindows?Lib?"user32.dll"?(ByVal?hWndParent?As?IntPtr,?ByVal?lpEnumFunc?As?EnumChildProc,?ByVal?lParam?As?Integer)?As?Boolean
Private?Declare?Auto?Function?SendMessage?Lib?"User32.dll"?(ByVal?hWnd?As?IntPtr,?ByVal?Msg?As?Integer,?ByVal?wParam?As?Integer,?ByVal?lParam?As?String)?As?Integer
'Private?Declare?Function?CheckDlgButton?Lib?"user32"?Alias?"CheckDLGButtonA"?(ByVal?hDlg?As?IntPtr,?ByVal?nIDButton?As?IntPtr,?ByVal?wCheck?As?Integer)?As?Integer
Private?Declare?Function?GetClassName?Lib?"user32"?Alias?"GetClassNameA"?(ByVal?hWnd?As?IntPtr,?ByVal?lpClassName?As?StringBuilder,?ByVal?nMaxCount?As?Integer)?As?Integer
'Private?Declare?Function?GetWindowThreadProcessId?Lib?"user32"?Alias?"GetWindowThreadProcessId"?(ByVal?hwnd?As?IntPtr,?ByVal?lpdwProcessId?As?Long)?As?Integer
Private?Declare?Auto?Function?GetWindowTextLength?Lib?"user32"?Alias?"GetWindowTextLength"?(ByVal?hwnd?As?IntPtr)?As?Integer
Private?Declare?Function?GetWindowText?Lib?"user32"?Alias?"GetWindowTextA"?(ByVal?hwnd?As?IntPtr,?ByVal?lpString?As?StringBuilder,?ByVal?cch?As?Integer)?As?Integer
'?相關(guān)消息定義，也有沒用到的
Const?WM_SETTEXT?=?HC
Const?WM_GETTEXT?=?HD
'Const?WM_SETFOCUS?=?H7
'Const?WM_KILLFOCUS?=?H8
'Const?WM_CLOSE?=?H10
'Const?WM_SYSCOMMAND?=?H112
'Const?SC_CLOSE?=?HF060
'Const?SC_MINIMIZE?=?HF020
Const?BM_GETCHECK?=?HF0
Const?BM_SETCHECK?=?HF1
Const?BM_GETSTATE?=?HF2
Const?BM_SETSTATE?=?HF3
Const?BM_SETSTYLE?=?HF4
Const?BM_CLICK?=?HF5
'Const?BM_GETIMAGE?=?HF6
'Const?BM_SETIMAGE?=?HF7
Const?BST_UNCHECKED?=?O0
Const?BST_CHECKED?=?O1
Const?BST_INDETERMINATE?=?O2
'?儲存窗口句柄
Dim?WindowHandle?As?IntPtr
'?儲存兩個(gè)（或者多個(gè)）編輯框句柄
Dim?EditHandle?As?New?List(Of?IntPtr)
Dim?EditWindowsText?As?List(Of?String)
'?儲存復(fù)選框句柄
Dim?CheckHandle?As?IntPtr?=?0
Private?Sub?Form1_Load(ByVal?sender?As?System.Object,?ByVal?e?As?System.EventArgs)?Handles?MyBase.Load
Button1_Click(sender,?e)
End?Sub
'?EnumChildWindows?回調(diào)函數(shù)，該函數(shù)名作為API函數(shù)EnumChildWindows?的一個(gè)參數(shù)
'?該函數(shù)實(shí)現(xiàn)了枚舉各個(gè)子窗口，找出編輯框?qū)傩缘墓δ?/p>
Public?Function?EnumChildProcC(ByVal?hwnd?As?IntPtr,?ByVal?lParam?As?Integer)?As?Boolean
Dim?dwWindowClass?As?StringBuilder?=?New?StringBuilder(100)
'?獲得某一個(gè)句柄的類名
GetClassName(hwnd,?dwWindowClass,?100)
If?dwWindowClass.ToString.Contains("EDIT")?Or?dwWindowClass.ToString.Contains("Edit")?Then?????'?類名包含EDIT的為編輯框
EditHandle.Add(hwnd)????????????????????????'?存儲該句柄
End?If
'?返回?True?一直枚舉完
Return?True
End?Function
Private?Sub?Button1_Click(ByVal?sender?As?System.Object,?ByVal?e?As?System.EventArgs)?Handles?Button1.Click
WindowHandle?=?FindWindow(vbNullString,?"登陸")
If?WindowHandle.ToInt32?=?0?Then
MsgBox("未捕獲到窗口"?+?"登陸")
Return
End?If
'?枚舉所有主窗口的子窗口（控件），枚舉時(shí)自動調(diào)用回調(diào)函數(shù)，完成編輯框句柄的獲取
EnumChildWindows(WindowHandle,?AddressOf?EnumChildProcC,?0)
'?尋找復(fù)選框
CheckHandle?=?FindWindowEx(WindowHandle,?IntPtr.Zero,?vbNullString,?"記住密碼")
Dim?str?As?New?StringBuilder
Dim?j?As?Integer?=?0
'?對編輯框文本賦值
For?j?=?0?To?EditHandle.Count?-?1
SendMessage(EditHandle(j),?WM_SETTEXT,?0,?"Text")
'GetWindowText(EditHandle(j),?str,?20)
'EditWindowsText.Add(Str.ToString)
'Str.Clear()
Next
If?EditHandle.Count?=?0?Then
MsgBox("未找到輸入框！")
End?If????????
If?CheckHandle.ToInt32??0?Then
'CheckDlgButton(WindowHandle,?id,?1)
'?對復(fù)選框進(jìn)行鼠標(biāo)單擊操作
SendMessage(CheckHandle,?BM_CLICK,?0,?0)
'SendMessage(CheckHandle,?BM_SETCHECK,?True,?0)
End?If
End?Sub
End?Class
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