add notices for fresh windows users

src/vconfigmanager.cpp

@@ -1696,6 +1696,7 @@ void VConfigManager::checkVersion()
     const QString key("version");
     QString ver = getConfigFromSettings("global", key).toString();
     m_versionChanged = ver != c_version;
+    m_freshInstall = ver.isEmpty();
     if (m_versionChanged) {
         setConfigToSettings("global", key, c_version);
     }

src/vconfigmanager.h

@@ -603,6 +603,7 @@ public:
     bool getParsePasteLocalImage() const;
 
     bool versionChanged() const;
+    bool isFreshInstall() const;
 
     const QColor &getBaseBackground() const;
     void setBaseBackground(const QColor &p_bg);
@@ -1110,6 +1111,9 @@ private:
     // Whether the VNote instance has different version of vnote.ini.
     bool m_versionChanged;
 
+    // Whether VNote is first installed on this machine.
+    bool m_freshInstall;
+
     // Base background of MainWindow.
     QColor m_baseBackground;
 
@@ -2825,6 +2829,11 @@ inline bool VConfigManager::versionChanged() const
     return m_versionChanged;
 }
 
+inline bool VConfigManager::isFreshInstall() const
+{
+    return m_freshInstall;
+}
+
 inline const QColor &VConfigManager::getBaseBackground() const
 {
     return m_baseBackground;

src/vmainwindow.cpp

@@ -3478,6 +3478,24 @@ void VMainWindow::kickOffStartUpTimer(const QStringList &p_files)
 
         m_syncNoteListToCurrentTab = true;
 
+#if defined(Q_OS_WIN)
+        if (g_config->isFreshInstall()) {
+            VUtils::showMessage(QMessageBox::Information,
+                                tr("Notices for Windows Users"),
+                                tr("OpenGL requried by VNote may not work well on Windows by default."
+                                   "You may update your display card driver or set another openGL option in VNote's Settings dialog."
+                                   "Check <a href=\"https://github.com/tamlok/vnote/issues/853\">GitHub issue</a> for details."),
+                                tr("Strange behaviors includes:<br/>"
+                                   "* Interface freezes and does not response;<br/>"
+                                   "* Widgets are out of order after maximizing and restoring the main window;<br/>"
+                                   "* No cursor in edit mode;<br/>"
+                                   "* Menus are not clickable in full screen mode."),
+                                QMessageBox::Ok,
+                                QMessageBox::Ok,
+                                this);
+        }
+#endif
+
         g_config->updateLastStartDateTime();
     });
 }