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unit GikoUtil; |
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|
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interface |
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|
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uses |
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Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms; |
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|
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function MsgBox(const hWnd: HWND; const Text, Caption: string; Flags: Longint = MB_OK): Integer; |
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function MsgMoveProc(nCode: Integer; wParam: WPARAM; lParam: LPARAM): LRESULT; stdcall; |
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|
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implementation |
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var |
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hhk: HHOOK; |
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|
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function MsgBox(const hWnd: HWND; const Text, Caption: string; Flags: Longint = MB_OK): Integer; |
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begin |
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hhk := SetWindowsHookEx(WH_CBT, @MsgMoveProc, 0, GetCurrentThreadId()); |
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Result := Windows.MessageBox(hwnd, PChar(Text), PChar(Caption), Flags); |
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if hhk <> 0 then |
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UnhookWindowsHookEx(hhk); |
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end; |
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|
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function MsgMoveProc(nCode: Integer; wParam: WPARAM; lParam: LPARAM): LRESULT; stdcall; |
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function GetW(ARect: TRect): Integer; |
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begin |
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Result := ARect.Right - ARect.Left; |
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end; |
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function GetH(ARect: TRect): Integer; |
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begin |
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Result := ARect.Bottom - ARect.Top; |
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end; |
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function MoveRect(ARect: TRect; X, Y: Integer): TRect; |
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var |
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W, H: Integer; |
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begin |
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W := GetW(ARect); |
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H := GetH(ARect); |
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Result := Rect(X, Y, X + W, Y + H); |
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end; |
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var |
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hParent: HWND; |
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hMsgBox: HWND; |
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ParentR: TRect; |
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MsgBoxR: TRect; |
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begin |
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if nCode = HCBT_ACTIVATE then begin |
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hMsgBox := wParam; |
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hParent := GetParent(wParam); |
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if (hParent <> 0) and (hMsgBox <> 0) and |
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(GetWindowRect(hParent, ParentR)) and |
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(GetWindowRect(hMsgBox, MsgBoxR)) then begin |
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MsgBoxR := MoveRect(MsgBoxR, |
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ParentR.Left + ((GetW(ParentR) - GetW(MsgBoxR)) div 2), |
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ParentR.Top + ((GetH(ParentR) - GetH(MsgBoxR)) div 2)); |
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if MsgBoxR.Left < 0 then |
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MsgBoxR := MoveRect(MsgBoxR, 0, MsgBoxR.Top); |
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if MsgBoxR.Top < 0 then |
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MsgBoxR := MoveRect(MsgBoxR, MsgBoxR.Left, 0); |
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if MsgBoxR.Left + GetW(MsgBoxR) > Screen.WorkAreaWidth then |
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MsgBoxR := MoveRect(MsgBoxR, Screen.WorkAreaWidth - GetW(MsgBoxR), MsgBoxR.Top); |
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if MsgBoxR.Top + GetH(MsgBoxR) > Screen.WorkAreaHeight then |
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MsgBoxR := MoveRect(MsgBoxR, MsgBoxR.Left, Screen.WorkAreaHeight - GetH(MsgBoxR)); |
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MoveWindow(hMsgBox, MsgBoxR.Left, MsgBoxR.Top, GetW(MsgBoxR), GetH(MsgBoxR), False); |
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end; |
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UnhookWindowsHookEx(hhk); |
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hhk := 0; |
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end else begin |
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CallNextHookEx(hhk, nCode, wParam, lParam); |
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end; |
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Result := 0; |
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end; |
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|
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end. |