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Prevent Qt handling Windows Messages while the fatal error message is open

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This commit is contained in:
Mat Sutcliffe
2021-05-24 20:01:22 +01:00
parent d4991e9d72
commit 074ab70380
1 changed files with 14 additions and 0 deletions
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14
src/blackmisc/loghandler.cpp
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@@ -18,6 +18,7 @@
#include "crashpad/client/simulate_crash.h"
#endif
#include <QAbstractNativeEventFilter>
#include <QCoreApplication>
#include <QGlobalStatic>
#include <QMessageLogContext>
@@ -57,7 +58,20 @@ namespace BlackMisc
#if defined(Q_CC_MSVC) && defined(QT_NO_DEBUG)
if (type == QtFatalMsg)
{
struct EventFilter : public QAbstractNativeEventFilter
{
// Prevent Qt from handling Windows Messages while the messagebox is open
virtual bool nativeEventFilter(const QByteArray &, void *message, long *result) override
{
auto msg = static_cast<MSG *>(message);
*result = DefWindowProc(msg->hwnd, msg->message, msg->wParam, msg->lParam);
return true;
}
};
EventFilter ef;
qApp->installNativeEventFilter(&ef);
MessageBoxW(nullptr, message.toStdWString().c_str(), nullptr, MB_OK); // display assert dialog in release build
qApp->removeNativeEventFilter(&ef);
# if defined(BLACK_USE_CRASHPAD)
CRASHPAD_SIMULATE_CRASH(); // workaround inability to catch __fastfail
# endif