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[RAPPS] Improve existing window re-use (#5617)

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- Fix small race between CreateMutex and CMainWindow creating the window, and another instance getting NULL from FindWindow.
- If the existing window is minimized, it should be restored.
This commit is contained in:
Whindmar Saksit 2024-06-08 01:18:18 +02:00 committed by GitHub
parent 7e2cd98688
commit 3f6af8b848
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GPG key ID: B5690EEEBB952194
1 changed files with 19 additions and 7 deletions
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26
base/applications/rapps/unattended.cpp
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@ -355,14 +355,26 @@ ParseCmdAndExecute(LPWSTR lpCmdLine, BOOL bIsFirstLaunch, int nCmdShow)
if ((!hMutex) || (GetLastError() == ERROR_ALREADY_EXISTS))
{
/* If already started, find its window */
HWND hWindow = FindWindowW(szWindowClass, NULL);
HWND hWindow;
for (int wait = 2500, inter = 250; wait > 0; wait -= inter)
{
if ((hWindow = FindWindowW(szWindowClass, NULL)) != NULL)
break;
Sleep(inter);
}
/* Activate window */
ShowWindow(hWindow, SW_SHOWNORMAL);
SetForegroundWindow(hWindow);
if (bAppwizMode)
PostMessage(hWindow, WM_COMMAND, ID_ACTIVATE_APPWIZ, 0);
return FALSE;
if (hWindow)
{
/* Activate the window in the other instance */
SwitchToThisWindow(hWindow, TRUE);
if (bAppwizMode)
PostMessage(hWindow, WM_COMMAND, ID_ACTIVATE_APPWIZ, 0);
if (hMutex)
CloseHandle(hMutex);
return FALSE;
}
}
CMainWindow wnd(&db, bAppwizMode);