StdScheduler: Make DoScheduleProcs virtual, override it in C4AbstractApp and set isInManualLoop flag around the DoScheduleProcs call so the FlushMessages() of C4AbstractApp will happen when isInManualLoop is true

src/platform/C4App.cpp

@@ -25,7 +25,7 @@ void C4AbstractApp::Run()
 		ScheduleProcs();
 }
 
-bool C4AbstractApp::ScheduleProcs(int iTimeout)
+bool C4AbstractApp::DoScheduleProcs(int iTimeout)
 {
 	// Always fail after quit message
 	if(fQuitMsgReceived)
@@ -34,7 +34,7 @@ bool C4AbstractApp::ScheduleProcs(int iTimeout)
 	// Unfortunately, the SDL event loop needs to be polled
 	FlushMessages();
 #endif
-	return StdScheduler::ScheduleProcs(iTimeout);
+	return StdScheduler::DoScheduleProcs(iTimeout);
 }
 
 void C4Window::PerformUpdate()

src/platform/C4App.h

@@ -97,7 +97,7 @@ public:
 	// Gamma
 	virtual bool ApplyGammaRamp(struct _GAMMARAMP &ramp, bool fForce);
 	virtual bool SaveDefaultGammaRamp(struct _GAMMARAMP &ramp);
-	virtual bool ScheduleProcs(int iTimeout = 1000/36);
+	virtual bool DoScheduleProcs(int iTimeout);
 	bool FlushMessages();
 	C4Window * pWindow;
 	bool fQuitMsgReceived; // if true, a quit message has been received and the application should terminate

src/platform/StdScheduler.cpp

@@ -132,7 +132,6 @@ C4TimeMilliseconds StdSchedulerProc::GetNextTick(C4TimeMilliseconds tNow)
 
 bool StdScheduler::ScheduleProcs(int iTimeout)
 {
-	isInManualLoop = true;
 	// Needs at least one process to work properly
 	if (!procs.size()) return false;
 
@@ -149,8 +148,10 @@ bool StdScheduler::ScheduleProcs(int iTimeout)
 		}
 	}
 	
+	bool old = isInManualLoop;
+	isInManualLoop = true;
 	bool res = DoScheduleProcs(iTimeout);
-	isInManualLoop = false;
+	isInManualLoop = old;
 	return res;
 }
 

src/platform/StdScheduler.h

@@ -246,15 +246,13 @@ public:
 	// needs to be called on thread tasks for this scheduler are meant to be run on
 	void StartOnCurrentThread();
 
-	virtual bool ScheduleProcs(int iTimeout = -1);
+	bool ScheduleProcs(int iTimeout = 1000/36);
 	void UnBlock();
 
 protected:
 	// overridable
 	virtual void OnError(StdSchedulerProc *) { }
-
-private:
-	bool DoScheduleProcs(int iTimeout);
+	virtual bool DoScheduleProcs(int iTimeout);
 };
 
 // A simple process scheduler thread