ProcOld = SetWindowLong(hwnd, GWL_WNDPROC, AddressOf WindowProc) End SubPrivate Sub Form_MouseDown(Button As Integer, Shift As Integer, x As Single, y As Single) Dim r As RECT Dim p As POINTAPI If Button = vbRightButton Then GetCursorPos p TrackPopupMenu lhSysMenu, 0, p.x, p.y, 0, Me.hwnd, r End If End SubPrivate Sub Form_Unload(Cancel As Integer) SetWindowLong hwnd, GWL_WNDPROC, ProcOld End Sub模块代码 Attribute VB_Name = "Module1" Option Explicit Public Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As String, ByVal lpsz2 As String) As Long Public Declare Function TrackPopupMenu Lib "user32" (ByVal hMenu As Long, ByVal wFlags As Long, ByVal x As Long, ByVal y As Long, ByVal nReserved As Long, ByVal hwnd As Long, lprc As RECT) As Long Public Declare Function GetCursorPos Lib "user32" (lpPoint As POINTAPI) As Long Public Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long Public Declare Function CallWindowProc Lib "user32" Alias "CallWindowProcA" (ByVal lpPrevWndFunc As Long, ByVal hwnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long Public Declare Function AppendMenu Lib "user32" Alias "AppendMenuA" (ByVal hMenu As Long, ByVal wFlags As Long, ByVal wIDNewItem As Long, ByVal lpNewItem As String) As Long Public Declare Function GetSystemMenu Lib "user32" (ByVal hwnd As Long, ByVal bRevert As Long) As Long Public Declare Function GetClassName Lib "user32" Alias "GetClassNameA" (ByVal hwnd As Long, ByVal lpClassName As String, ByVal nMaxCount As Long) As Long Public Declare Function GetWindowThreadProcessId Lib "user32" (ByVal hwnd As Long, lpdwProcessId As Long) As Long Public Declare Function GetCurrentProcessId Lib "kernel32" () As Long Public Declare Function GetWindowRect Lib "user32" (ByVal hwnd As Long, lpRect As RECT) As Long Public Declare Function SetWindowPos Lib "user32" (ByVal hwnd As Long, ByVal hWndInsertAfter As Long, ByVal x As Long, ByVal y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long Public Declare Function SetWindowText Lib "user32" Alias "SetWindowTextA" (ByVal hwnd As Long, ByVal lpString As String) As Long Public Declare Function EnableWindow Lib "user32" (ByVal hwnd As Long, ByVal fEnable As Long) As Long Public Type RECT Left As Long Top As Long Right As Long Bottom As Long End Type Public Type POINTAPI x As Long y As Long End Type Public ProcOld As Long Public Const TPM_LEFTALIGN = &H0& Public Const WM_SYSCOMMAND = &H112 Public Const MF_SEPARATOR = &H800& Public Const MF_STRING = &H0& Public Const GWL_WNDPROC = (-4) Public Const IDM_ABOUT As Long = 1010 Public Const WM_COMMAND = &H111 Public Const WM_ACTIVATE = &H6 Public Const WA_INACTIVE = 0Public lhSysMenu As Long, lRet As LongPublic Function WindowProc(ByVal hwnd As Long, ByVal iMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long Select Case iMsg Case WM_SYSCOMMAND If wParam = IDM_ABOUT Then MsgBox "VB Move Messagebox demo", vbInformation, "About" Exit Function End If Case WM_COMMAND If wParam = IDM_ABOUT Then InputBox "a", "b" Exit Function Else CallWindowProc ProcOld, hwnd, WM_SYSCOMMAND, wParam, lParam WindowProc = 0 Exit Function End If Case WM_ACTIVATE If wParam = WA_INACTIVE Then Dim mywnd As Long Dim buf As String * 64 Dim oldrect As RECT GetWindowRect hwnd, oldrect mywnd = lParam GetClassName mywnd, buf, 64 If Mid(buf, 1, 6) = "#32770" Then Dim processid As Long GetWindowThreadProcessId mywnd, processid If processid = GetCurrentProcessId() Then 'SetWindowPos mywnd, 0, oldrect.Left, oldrect.Top, oldrect.Right - oldrect.Left, oldrect.Bottom - oldrect.Top, 0 Dim okbutton As Long okbutton = FindWindowEx(mywnd, 0, vbNullString, "ok") If okbutton Then SetWindowText okbutton, "允许" End If okbutton = FindWindowEx(mywnd, 0, vbNullString, "cancel") If okbutton Then EnableWindow okbutton, 0 End If End If End If End If End Select WindowProc = CallWindowProc(ProcOld, hwnd, iMsg, wParam, lParam) End Function
窗体代码
VERSION 5.00
Begin VB.Form Form1
Caption = "Form1"
ClientHeight = 3195
ClientLeft = 60
ClientTop = 345
ClientWidth = 4680
LinkTopic = "Form1"
ScaleHeight = 3195
ScaleWidth = 4680
StartUpPosition = 3 'Windows Default
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
'在弹出模态对话框的同时设置他的位置
'本例子掩饰与父窗体左上角对齐
'根据BCB_FANS(四大名捕之追杀令)的bcb代码改写为vb的
'仅供参考
'附BCB_FANS源代码
'BCB_FANS (四大名捕之追杀令)
'当MessageBox对话框显示的时候,主窗口将失去焦点,知道了这一点,问题就很简单了。下面是我的C++Builder代码。
'
'//替换主窗口的窗口过程(我不知道VC怎样办到这一点,反正原理就是这样)
'
'void __fastcall TForm1::WndProc(Messages::TMessage &Message)
'{
' TForm::WndProc(Message);
'
' //失去焦点之前
' if(Message.Msg == WM_NCACTIVATE)
' {
' }
' //失去焦点之后
' else if(Message.Msg == WM_ACTIVATE)
' {
' if(LOWORD(Message.WParam) == WA_INACTIVE)
' {
' HWND hWnd;
' char ClassBuf[64];
'
' hWnd = (HWND)Message.LParam;
' GetClassName(hWnd,ClassBuf,sizeof(ClassBuf));
'
' //首先判断是否是MessageBox对话框,
' if(AnsiString(ClassBuf) == "#32770")
' {
' //再判断这个窗口是否是本身程序的窗口(因为别的程序弹出窗口时,你的主窗口也同样失去焦点)
' DWORD dwProcessID;
'
' GetWindowThreadProcessId(hWnd,&dwProcessID);
'
' if(dwProcessID == GetCurrentProcessId())
' {
' //移动窗口的位置
' MoveWindow(.......);//或者调用 SetWindowPos(...)
'
' //替换左边的标题栏图标(如果有的话)
' SetClassLong(hWnd,GCL_HICON,(long)Image1->Picture->Icon->Handle);
'
' //重新设置按钮的文本(比如把确定改为“OK 007”)
' HWND hTemp;
'
' hTemp = GetDlgItem(hWnd,1);
' SetWindowText(hTemp,"New Text For Button");
'
' //.........其他操作
' }
' }
' }
' }
'}Option Explicit
Private Sub Form_Load()
On Error Resume Next
lhSysMenu = GetSystemMenu(hwnd, 0&)
lRet = AppendMenu(lhSysMenu, MF_SEPARATOR, 0&, vbNullString)
lRet = AppendMenu(lhSysMenu, MF_STRING, IDM_ABOUT, "About...")
Show
ProcOld = SetWindowLong(hwnd, GWL_WNDPROC, AddressOf WindowProc)
End SubPrivate Sub Form_MouseDown(Button As Integer, Shift As Integer, x As Single, y As Single)
Dim r As RECT
Dim p As POINTAPI
If Button = vbRightButton Then
GetCursorPos p
TrackPopupMenu lhSysMenu, 0, p.x, p.y, 0, Me.hwnd, r
End If
End SubPrivate Sub Form_Unload(Cancel As Integer)
SetWindowLong hwnd, GWL_WNDPROC, ProcOld
End Sub模块代码
Attribute VB_Name = "Module1"
Option Explicit
Public Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As String, ByVal lpsz2 As String) As Long
Public Declare Function TrackPopupMenu Lib "user32" (ByVal hMenu As Long, ByVal wFlags As Long, ByVal x As Long, ByVal y As Long, ByVal nReserved As Long, ByVal hwnd As Long, lprc As RECT) As Long
Public Declare Function GetCursorPos Lib "user32" (lpPoint As POINTAPI) As Long
Public Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Public Declare Function CallWindowProc Lib "user32" Alias "CallWindowProcA" (ByVal lpPrevWndFunc As Long, ByVal hwnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Public Declare Function AppendMenu Lib "user32" Alias "AppendMenuA" (ByVal hMenu As Long, ByVal wFlags As Long, ByVal wIDNewItem As Long, ByVal lpNewItem As String) As Long
Public Declare Function GetSystemMenu Lib "user32" (ByVal hwnd As Long, ByVal bRevert As Long) As Long
Public Declare Function GetClassName Lib "user32" Alias "GetClassNameA" (ByVal hwnd As Long, ByVal lpClassName As String, ByVal nMaxCount As Long) As Long
Public Declare Function GetWindowThreadProcessId Lib "user32" (ByVal hwnd As Long, lpdwProcessId As Long) As Long
Public Declare Function GetCurrentProcessId Lib "kernel32" () As Long
Public Declare Function GetWindowRect Lib "user32" (ByVal hwnd As Long, lpRect As RECT) As Long
Public Declare Function SetWindowPos Lib "user32" (ByVal hwnd As Long, ByVal hWndInsertAfter As Long, ByVal x As Long, ByVal y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long
Public Declare Function SetWindowText Lib "user32" Alias "SetWindowTextA" (ByVal hwnd As Long, ByVal lpString As String) As Long
Public Declare Function EnableWindow Lib "user32" (ByVal hwnd As Long, ByVal fEnable As Long) As Long
Public Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Public Type POINTAPI
x As Long
y As Long
End Type
Public ProcOld As Long
Public Const TPM_LEFTALIGN = &H0&
Public Const WM_SYSCOMMAND = &H112
Public Const MF_SEPARATOR = &H800&
Public Const MF_STRING = &H0&
Public Const GWL_WNDPROC = (-4)
Public Const IDM_ABOUT As Long = 1010
Public Const WM_COMMAND = &H111
Public Const WM_ACTIVATE = &H6
Public Const WA_INACTIVE = 0Public lhSysMenu As Long, lRet As LongPublic Function WindowProc(ByVal hwnd As Long, ByVal iMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Select Case iMsg
Case WM_SYSCOMMAND
If wParam = IDM_ABOUT Then
MsgBox "VB Move Messagebox demo", vbInformation, "About"
Exit Function
End If
Case WM_COMMAND
If wParam = IDM_ABOUT Then
InputBox "a", "b"
Exit Function
Else
CallWindowProc ProcOld, hwnd, WM_SYSCOMMAND, wParam, lParam
WindowProc = 0
Exit Function
End If
Case WM_ACTIVATE
If wParam = WA_INACTIVE Then
Dim mywnd As Long
Dim buf As String * 64
Dim oldrect As RECT
GetWindowRect hwnd, oldrect
mywnd = lParam
GetClassName mywnd, buf, 64
If Mid(buf, 1, 6) = "#32770" Then
Dim processid As Long
GetWindowThreadProcessId mywnd, processid
If processid = GetCurrentProcessId() Then
'SetWindowPos mywnd, 0, oldrect.Left, oldrect.Top, oldrect.Right - oldrect.Left, oldrect.Bottom - oldrect.Top, 0
Dim okbutton As Long
okbutton = FindWindowEx(mywnd, 0, vbNullString, "ok")
If okbutton Then
SetWindowText okbutton, "允许"
End If
okbutton = FindWindowEx(mywnd, 0, vbNullString, "cancel")
If okbutton Then
EnableWindow okbutton, 0
End If
End If
End If
End If
End Select
WindowProc = CallWindowProc(ProcOld, hwnd, iMsg, wParam, lParam)
End Function