procedure TFormMain.N1Click(Sender: TObject);
begin
if not Assigned(FormRoom) then FormRoom:=TFormRoom.Create(Application);
FormRoom.Show;
end;
TFormMain是MDIForm,FormRoom是MDIChild,执行的时候,说Cannot create from.no MDI froms are currently active
咋回事?
begin
if not Assigned(FormRoom) then FormRoom:=TFormRoom.Create(Application);
FormRoom.Show;
end;
TFormMain是MDIForm,FormRoom是MDIChild,执行的时候,说Cannot create from.no MDI froms are currently active
咋回事?
解决方案 »
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