From b2069885313881a177798375160256879c7b796c Mon Sep 17 00:00:00 2001 From: Mounir IDRASSI Date: Sun, 25 Mar 2018 20:39:40 +0200 Subject: Windows: use cleaner approach to implement bringing our windows to foreground. The previous implementation was causing issues with other application, like random freezing. --- src/Common/Dlgcode.c | 37 +++++++++++++++++++++++-------------- 1 file changed, 23 insertions(+), 14 deletions(-) (limited to 'src/Common/Dlgcode.c') diff --git a/src/Common/Dlgcode.c b/src/Common/Dlgcode.c index 112328b3..4f0c4af6 100644 --- a/src/Common/Dlgcode.c +++ b/src/Common/Dlgcode.c @@ -7577,33 +7577,42 @@ BOOL CALLBACK WaitDlgProc (HWND hwndDlg, UINT msg, WPARAM wParam, LPARAM lParam) } -void BringToForeground(HWND hWnd) +// Based on source: https://www.codeproject.com/Tips/76427/How-to-bring-window-to-top-with-SetForegroundWindo?msg=5285754#xx5285754xx +void BringToForeground (HWND hWnd) { if(!::IsWindow(hWnd)) return; - - DWORD lockTimeOut = 0; HWND hCurrWnd = ::GetForegroundWindow(); DWORD dwThisTID = ::GetCurrentThreadId(), dwCurrTID = ::GetWindowThreadProcessId(hCurrWnd,0); - + // This structure will be used to create the keyboard + // input event. + INPUT ip; + if (hCurrWnd != hWnd) { if(dwThisTID != dwCurrTID) { - ::AttachThreadInput(dwThisTID, dwCurrTID, TRUE); - - ::SystemParametersInfo(SPI_GETFOREGROUNDLOCKTIMEOUT,0,&lockTimeOut,0); - ::SystemParametersInfo(SPI_SETFOREGROUNDLOCKTIMEOUT,0,0,SPIF_SENDWININICHANGE | SPIF_UPDATEINIFILE); - - ::AllowSetForegroundWindow(ASFW_ANY); + // Set up a generic keyboard event. + ip.type = INPUT_KEYBOARD; + ip.ki.wScan = 0; // hardware scan code for key + ip.ki.time = 0; + ip.ki.dwExtraInfo = 0; + + // Press the "A" key + ip.ki.wVk = VK_MENU; // virtual-key code for the "a" key + ip.ki.dwFlags = 0; // 0 for key press + SendInput(1, &ip, sizeof(INPUT)); + + ::Sleep(250); //Sometimes SetForegroundWindow will fail and the window will flash instead of it being show. Sleeping for a bit seems to help. } - + ::SetForegroundWindow(hWnd); - + if(dwThisTID != dwCurrTID) { - ::SystemParametersInfo(SPI_SETFOREGROUNDLOCKTIMEOUT,0,(PVOID)lockTimeOut,SPIF_SENDWININICHANGE | SPIF_UPDATEINIFILE); - ::AttachThreadInput(dwThisTID, dwCurrTID, FALSE); + // Release the "A" key + ip.ki.dwFlags = KEYEVENTF_KEYUP; // KEYEVENTF_KEYUP for key release + SendInput(1, &ip, sizeof(INPUT)); } } -- cgit v1.2.3