#533 Block update during repaint

Author: MaartenHilferink

qtgui/exe/src/DmsExport.cpp

@@ -4,6 +4,7 @@
 
 #include "DmsExport.h"
 #include "DmsMainWindow.h"
+#include "DmsTreeView.h"
 #include "ExportInfo.h"
 #include "utl/Environment.h"
 #include "Parallel.h"
@@ -727,7 +728,14 @@ void DmsExportWindow::exportActiveTabInfoOrCloseAfterExport()
     m_export_button->setText("Exporting...");
     //m_export_button->setDisabled(true);
     m_cancel_button->setDisabled(true);
-    m_export_button->repaint();
+
+
+    {
+        MainWindow::TheOne()->m_treeview->setUpdatesEnabled(false);
+        MainThreadBlocker blockThis;
+        m_export_button->repaint();
+        MainWindow::TheOne()->m_treeview->setUpdatesEnabled(true);
+    }
 
     try {
         exportImpl();

rtc/dll/src/act/MainThread.cpp

@@ -129,6 +129,16 @@ RTC_CALL bool IsProcessingMainThreadOpers()
 	return s_ProcessMainThreadOperLevel != 0;
 }
 
+MainThreadBlocker::MainThreadBlocker()
+{
+	++s_ProcessMainThreadOperLevel;
+}
+
+MainThreadBlocker::~MainThreadBlocker()
+{
+	--s_ProcessMainThreadOperLevel;
+}
+
 void ProcessMainThreadOpers()
 {
 	assert(IsMainThread());

rtc/dll/src/act/MainThread.h

@@ -45,5 +45,12 @@ RTC_CALL UInt32 GetCallCount();
 RTC_CALL UInt32 GetThreadID();
 RTC_CALL void AddMainThreadOper(std::function<void()>&& func, bool postAlways = false);
 RTC_CALL void ProcessMainThreadOpers();
+RTC_CALL bool IsProcessingMainThreadOpers();
+
+struct MainThreadBlocker
+{
+	RTC_CALL MainThreadBlocker();
+	RTC_CALL ~MainThreadBlocker();
+};
 
 #endif // __RTC_ACT_MAINTHREAD_H