51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
// 14 may 2015
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#include "uipriv_windows.hpp"
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// The utility window is a special window that performs certain tasks internal to libui.
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// It is not a message-only window, and it is always hidden and disabled.
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// Its roles:
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// - It is the initial parent of all controls. When a control loses its parent, it also becomes that control's parent.
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// - It handles WM_QUERYENDSESSION requests.
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// - It handles WM_WININICHANGE and forwards the message to any child windows that request it.
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// - It handles executing functions queued to run by uiQueueMain().
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// TODO explain why it isn't message-only
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static LRESULT CALLBACK utilWindowWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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void (*qf)(void *);
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LRESULT lResult;
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uiprivTimer *timer;
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if (handleParentMessages(hwnd, uMsg, wParam, lParam, &lResult) != FALSE)
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return lResult;
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switch (uMsg) {
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case WM_QUERYENDSESSION:
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// TODO block handler (TODO figure out if this meant the Vista-style block handler or not)
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if (uiprivShouldQuit()) {
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uiQuit();
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return TRUE;
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}
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return FALSE;
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case WM_WININICHANGE:
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issueWM_WININICHANGE(wParam, lParam);
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return 0;
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case WM_TIMER:
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timer = (uiprivTimer *) wParam;
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if (!(*(timer->f))(timer->data)) {
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if (KillTimer(utilWindow, (UINT_PTR) timer) == 0)
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logLastError(L"error calling KillTimer() to end uiTimer() procedure");
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uiprivFreeTimer(timer);
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}
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return 0;
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}
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return DefWindowProcW(hwnd, uMsg, wParam, lParam);
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}
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void uninitUtilWindow(void)
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{
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if (DestroyWindow(utilWindow) == 0)
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logLastError(L"error destroying utility window");
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if (UnregisterClass(utilWindowClass, hInstance) == 0)
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logLastError(L"error unregistering utility window class");
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}
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