c++windowvclowlnext

c++: owlnext + vcl: New Window missing its Parent

I have a Application mostly written with the owl-libary.

There I want open new vcl-windows out of the main owl-window.
This works great, though if a dialog-window is opened (even with ShowModal) and I focus another application, then the main-window get's into foreground but is blocked by the window behind it.

I guess the Problem is the missing parent-setting.

However, I can't convert owl's TWindow to vcl's TWinControl.

Is there a trick to set a vcl's parent setting to a owl's TWindow-Object? Or could this be caused by something entirely different?

EDIT: I'm using...

void(TWindow* parent){
    Form=new TForm((HWND)parent->Handle);
    Form->ParentWindow=parent->Handle;
    Form->BorderIcons >> biMinimize >> biMaximize << biSystemMenu; //No minimize, no maximize, but close
    Form->BorderStyle = bsSingle;
    Form->Position = poMainFormCenter;
    ...
    Form->ShowModal();

...now. However, the new window is locked up and can not be clicked/closed/switched to. Is there something I missed in using ParentWindow?

EDIT2: I think it might be a Problem that the parent is a TDecoratedMDIFrame, which is a MDI-Container, so my dialog is treated like a mdi-child instead of a normal dialog...

Solution

  • TWinControl has a ParentWindow property for specifying a non-VCL parent window.

    Also, in modern VCL versions, you can specify a ParentWnd when displaying a VCL dialog.