Default Push Button for tab(child window)

[zile]

I have this dialogbox with a default push button already which works, below this button i have a tab control, after i make a tab and set one of the buttons IN the tab as the default push button, it doesnt activate the button when i press enter, instead it activates the main dialogbox's button( first default push button). is there any way to allow the tab's default push button to work if my active window is the tab?

even if i dont enable default push button in the dialog box, the default push button in the TAB doesnt work.