Added --no-windows-assert-ui command line option

This disables Windows C Runtime assert dialogs from popping up.

src/main.cc

@@ -36,6 +36,10 @@ This file is part of the QGROUNDCONTROL project
 #include "TCPLink.h"
 #ifdef QT_DEBUG
 #include "AutoTest.h"
+#include "CmdLineOptParser.h"
+#ifdef Q_OS_WIN
+#include <crtdbg.h>
+#endif
 #endif
 
 /* SDL does ugly things to main() */
@@ -44,10 +48,10 @@ This file is part of the QGROUNDCONTROL project
 #endif
 
 
-// Install a message handler so you do not need
-// the MSFT debug tools installed to se
-// qDebug(), qWarning(), qCritical and qAbort
 #ifdef Q_OS_WIN
+
+/// @brief Message handler which is installed using qInstallMsgHandler so you do not need
+/// the MSFT debug tools installed to see qDebug(), qWarning(), qCritical and qAbort
 void msgHandler( QtMsgType type, const char* msg )
 {
     const char symbols[] = { 'I', 'E', '!', 'X' };
@@ -56,6 +60,17 @@ void msgHandler( QtMsgType type, const char* msg )
     if( type == QtFatalMsg ) abort();
 }
 
+/// @brief CRT Report Hook installed using _CrtSetReportHook. We install this hook when
+/// we don't want asserts to pop a dialog on windows.
+int WindowsCrtReportHook(int reportType, char* message, int* returnValue)
+{
+    Q_UNUSED(reportType);
+    
+    std::cerr << message << std::endl;  // Output message to stderr
+    *returnValue = 0;                   // Don't break into debugger
+    return true;                        // We handled this fully ourselves
+}
+
 #endif
 
 /**
@@ -81,13 +96,27 @@ int main(int argc, char *argv[])
     qRegisterMetaType<QAbstractSocket::SocketError>();
     
 #ifdef QT_DEBUG
-    if (argc > 1 && QString(argv[1]).compare("--unittest", Qt::CaseInsensitive) == 0) {
-        // Strip off extra command line args so QTest doesn't complain
-        for (int i=1; i<argc-1; i++)
-        {
-            argv[i] = argv[i+1];
-        }
-        
+    // We parse a small set of command line options here prior to QGCCore in order to handle the ones
+    // which need to be handled before a QApplication object is started.
+    
+    bool runUnitTests = false;          // Run unit test
+    bool quietWindowsAsserts = false;   // Don't let asserts pop dialog boxes
+    
+    CmdLineOpt_t rgCmdLineOptions[] = {
+        { "--unittest",             &runUnitTests },
+        { "--no-windows-assert-ui", &quietWindowsAsserts },
+        // Add additional command line option flags here
+    };
+    
+    ParseCmdLineOptions(argc, argv, rgCmdLineOptions, sizeof(rgCmdLineOptions)/sizeof(rgCmdLineOptions[0]), true);
+    
+    if (quietWindowsAsserts) {
+#ifdef Q_OS_WIN
+        _CrtSetReportHook(WindowsCrtReportHook);
+#endif
+    }
+    
+    if (runUnitTests) {
         // Run the test
         int failures = AutoTest::run(argc-1, argv);
         if (failures == 0)