How to judge a window is closed or not?

ROOT
1

Hi, I have two questions:

  1. In the MyMainframe class, I create a SetDiag:
    fSetDiag = new SetDiag(fClient->GetRoot(),400,200);
    and then I write:
    if(fSetDiag!=NULL) fSetDiag->Refresh();

I found that if I close the fSetDiag, the fSetDiag is not set to NULL, then segmentation violation. Any suggestions?

  1. If I want the fSetDiag window is always on the top of the windows, how to do that?
2

Hi,

  1. With no real example and information what kind of classes are SetDiag and MyMainframe I could only suggest: the easiest way will be if your class SetDiag emits a signal “Closed()”. You can connect then a method of MyMainframe class to this signal and set fSetDiag=0 there. Do not forget to disconnect from this signal before setting to 0 and to connect again if you create a new one in MyMainframe class.

  2. You can use:gVirtualX->RaiseWindow(fSetDiag->GetId());presuming SetDiag is a TGObject by some inheritance.

Cheers, Ilka

3

Thanks, that’s exactly what I want!