I have a utility dialog (non-modal and stay-on-top) that should be accessible at all times when using the application (think of a dialog that can be used to take notes while working with the application) even if a modal dialog is displayed.
The rest of the application cannot be changed.
Is it possible? How could I go about it?
When ShowModal
is called, all existing top level windows are disabled. That's how modality is meant to work. If you have a window with which interaction is reasonable, you just need to enable it again.
For example, you could add this to your utility window:
type
TMyUtilityForm = class(TForm)
protected
procedure WMEnable(var Message: TWMEnable); message WM_ENABLE;
end;
....
procedure TMyUtilityForm.WMEnable(var Message: TWMEnable);
begin
if not Message.Enabled then
EnableWindow(Handle, True);
inherited;
end;
This will make sure that your utility window can never be disabled.
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