func (dlg *Dialog) SetDefaultButton(button *PushButton) error {
if button != nil && !win.IsChild(dlg.hWnd, button.hWnd) {
return newError("not a descendant of the dialog")
}
succeeded := false
if dlg.defaultButton != nil {
if err := dlg.defaultButton.setAndClearStyleBits(win.BS_PUSHBUTTON, win.BS_DEFPUSHBUTTON); err != nil {
return err
}
defer func() {
if !succeeded {
dlg.defaultButton.setAndClearStyleBits(win.BS_DEFPUSHBUTTON, win.BS_PUSHBUTTON)
}
}()
}
if button != nil {
if err := button.setAndClearStyleBits(win.BS_DEFPUSHBUTTON, win.BS_PUSHBUTTON); err != nil {
return err
}
}
dlg.defaultButton = button
succeeded = true
return nil
}
func (dlg *Dialog) SetCancelButton(button *PushButton) error {
if button != nil && !win.IsChild(dlg.hWnd, button.hWnd) {
return newError("not a descendant of the dialog")
}
dlg.cancelButton = button
return nil
}