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Esta função funciona muito melhor que usar a API SetForegroundWindow(Self.Handle);
function ForceForegroundWindow(hwnd: THandle): boolean; const SPI_GETFOREGROUNDLOCKTIMEOUT = $2000; SPI_SETFOREGROUNDLOCKTIMEOUT = $2001; var ForegroundThreadID: DWORD; ThisThreadID : DWORD; timeout : DWORD; begin if IsIconic(hwnd) then ShowWindow(hwnd, SW_RESTORE);
if GetForegroundWindow = hwnd then Result := true else begin // Windows 98/2000 doesn't want to foreground a window when some other // window has keyboard focus if ((Win32Platform = VER_PLATFORM_WIN32_NT) and (Win32MajorVersion > 4)) or ((Win32Platform = VER_PLATFORM_WIN32_WINDOWS) and ((Win32MajorVersion > 4) or ((Win32MajorVersion = 4) and (Win32MinorVersion > 0)))) then begin // Code from Karl E. Peterson, www.mvps.org/vb/sample.htm // Converted to Delphi by Ray Lischner // Published in The Delphi Magazine 55, page 16 Result := false; ForegroundThreadID := GetWindowThreadProcessID(GetForegroundWindow,nil); ThisThreadID := GetWindowThreadPRocessId(hwnd,nil); if AttachThreadInput(ThisThreadID, ForegroundThreadID, true) then begin BringWindowToTop(hwnd); // IE 5.5 related hack SetForegroundWindow(hwnd); AttachThreadInput(ThisThreadID, ForegroundThreadID, false); Result := (GetForegroundWindow = hwnd); end; if not Result then begin // Code by Daniel P. Stasinski SystemParametersInfo(SPI_GETFOREGROUNDLOCKTIMEOUT, 0, @timeout, 0); SystemParametersInfo(SPI_SETFOREGROUNDLOCKTIMEOUT, 0, TObject(0), SPIF_SENDCHANGE); BringWindowToTop(hwnd); // IE 5.5 related hack SetForegroundWindow(hWnd); SystemParametersInfo(SPI_SETFOREGROUNDLOCKTIMEOUT, 0, TObject(timeout), SPIF_SENDCHANGE); end; end else begin BringWindowToTop(hwnd); // IE 5.5 related hack SetForegroundWindow(hwnd); end; Result := (GetForegroundWindow = hwnd); end; end; // ForceForegroundWindow |