A Control in a panel sometimes cannot show

Question

In my panel, there are some tables using Zplane to arrange, there is another control, a ring control in the panel, when loading and display panel, sometimes the ring control can be displayed, sometimes it can not be displayed, but I can see an imprint of the ring. In this case, is there a way to redraw the panel or the control?
David

Answer 1

This is a big project, it is difficult to get the all code phase. Just simplly describe the architecture of the app. as follows:
Arragged some picture button in the main panel, using RunUserInterface () to maintain the running and events. all of the panel color are  (R:49, G:55, B:38). Of course, in the main function initializing stage, it will also do some  works such as spawn threads, install control callback etc. Then the app run a monitor process in a child panel and wait user interact. PS---All the child panels' style is the classic, hidden mode. Once user pressed a button (picture button) in the main frame panel, it will load the relative child panel. In the child panel, it is placed a table, a ring  and a tree control using UIR editor. The child panel will be manipulated by the main function, so it just returns its panel handle to the main panel, but not using RunUserInterface() individually. The Pseudo-code can be this:
//main frame:
int main()
     mainpanel = loadpanel();
     //initialize something
      //wat user press button
     RunUserinterface();
ButtonPressCallback()
    if (pressed)
        childPanel = loadChild();
         insertTableitem;
         insertTreeitems;
        DisplayChild(childPanel);   
    if (hideFlag)
        HidePanel(childPanel);
So, sometimes the child panel can not show controls fully, but in most cases it can show controls fully. I don't know why it will appear such a problem.
David