82 lines
1.9 KiB
C++
82 lines
1.9 KiB
C++
// 6 april 2015
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#include "uipriv_windows.hpp"
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static HHOOK filter;
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static LRESULT CALLBACK filterProc(int code, WPARAM wParam, LPARAM lParam)
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{
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MSG *msg = (MSG *) lParam;
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if (code < 0)
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goto callNext;
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if (areaFilter(msg)) // don't continue to our IsDialogMessage() hack if the area handled it
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goto discard;
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// TODO IsDialogMessage() hack here
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// otherwise keep going
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goto callNext;
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discard:
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// we handled it; discard the message so the dialog manager doesn't see it
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return 1;
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callNext:
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return CallNextHookEx(filter, code, wParam, lParam);
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}
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int registerMessageFilter(void)
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{
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filter = SetWindowsHookExW(WH_MSGFILTER,
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filterProc,
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hInstance,
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GetCurrentThreadId());
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return filter != NULL;
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}
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void unregisterMessageFilter(void)
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{
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if (UnhookWindowsHookEx(filter) == 0)
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logLastError(L"error unregistering libui message filter");
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}
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// TODO http://blogs.msdn.com/b/oldnewthing/archive/2005/04/08/406509.aspx when adding accelerators, TranslateAccelerators() before IsDialogMessage()
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void uiMain(void)
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{
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MSG msg;
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int res;
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HWND active;
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for (;;) {
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res = GetMessageW(&msg, NULL, 0, 0);
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if (res < 0) {
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logLastError(L"error calling GetMessage()");
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break; // bail out on error
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}
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if (res == 0) // WM_QUIT
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break;
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// TODO really active? or parentToplevel(msg->hwnd)?
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active = GetActiveWindow();
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if (active != NULL)
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// TODO find documentation that says IsDialogMessage() calls CallMsgFilter() for us, because that's what's happening
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if (IsDialogMessage(active, &msg) != 0)
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continue;
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TranslateMessage(&msg);
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DispatchMessageW(&msg);
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}
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}
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void uiQuit(void)
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{
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PostQuitMessage(0);
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}
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void uiQueueMain(void (*f)(void *data), void *data)
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{
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if (PostMessageW(utilWindow, msgQueued, (WPARAM) f, (LPARAM) data) == 0)
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// TODO this is likely not safe to call across threads (allocates memory)
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logLastError(L"error queueing function to run on main thread");
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}
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