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[windows] prevent multiple instances

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nyne
2024-11-11 10:58:48 +08:00
parent f8eace4c31
commit ea3cc8cc58
1 changed files with 20 additions and 0 deletions
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20
windows/runner/win32_window.cpp
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@@ -123,6 +123,26 @@ Win32Window::~Win32Window() {
bool Win32Window::Create(const std::wstring& title, bool Win32Window::Create(const std::wstring& title,
const Point& origin, const Point& origin,
const Size& size) { const Size& size) {
HWND hwnd = ::FindWindow(kWindowClassName, title.c_str());
if (hwnd) {
WINDOWPLACEMENT place = { sizeof(WINDOWPLACEMENT) };
GetWindowPlacement(hwnd, &place);
SetForegroundWindow(hwnd);
switch (place.showCmd) {
case SW_SHOWMAXIMIZED:
ShowWindow(hwnd, SW_SHOWMAXIMIZED);
break;
case SW_SHOWMINIMIZED:
ShowWindow(hwnd, SW_RESTORE);
break;
default:
ShowWindow(hwnd, SW_NORMAL);
break;
}
SetWindowPos(0, HWND_TOP, 0, 0, 0, 0, SWP_SHOWWINDOW | SWP_NOSIZE | SWP_NOMOVE);
return false;
}
Destroy(); Destroy();
const wchar_t* window_class = const wchar_t* window_class =