Save window maximized state

src/AppConfig.h

@@ -43,12 +43,16 @@ private:
 
 class AppConfig {
 public:
+    AppConfig();
     std::string getConfigDir();
     DeviceConfig *getDevice(std::string deviceId);
 
     void setWindow(wxPoint winXY, wxSize winWH);
     wxRect *getWindow();
     
+    void setWindowMaximized(bool max);
+    bool getWindowMaximized();
+
     void setTheme(int themeId);
     int getTheme();
     
@@ -59,5 +63,6 @@ public:
 private:
     std::map<std::string, DeviceConfig *> deviceConfig;
     std::atomic_int winX,winY,winW,winH;
+    std::atomic_bool winMax;
     std::atomic_int themeId;
 };