Method initButtonForAction

toolbar.go:325–384

(action *Action, state, style *byte, image *int32, text *uintptr)

}

func (tb *ToolBar) initButtonForAction(action *Action, state, style *byte, image *int32, text *uintptr) (err error) {
	if tb.hasStyleBits(win.CCS_VERT) {
		*state |= win.TBSTATE_WRAP
	} else if tb.defaultButtonWidth == 0 {
		*style |= win.BTNS_AUTOSIZE
	}

	if action.checked {
		*state |= win.TBSTATE_CHECKED
	}

	if action.enabled {
		*state |= win.TBSTATE_ENABLED
	}

	if action.checkable {
		*style |= win.BTNS_CHECK
	}

	if action.exclusive {
		*style |= win.BTNS_GROUP
	}

	if tb.buttonStyle != ToolBarButtonImageOnly && len(action.text) > 0 {
		*style |= win.BTNS_SHOWTEXT
	}

	if action.menu != nil {
		if len(action.Triggered().handlers) > 0 {
			*style |= win.BTNS_DROPDOWN
		} else {
			*style |= win.BTNS_WHOLEDROPDOWN
		}
	}

	if action.IsSeparator() {
		*style = win.BTNS_SEP
	}

	if tb.buttonStyle != ToolBarButtonTextOnly {
		if *image, err = tb.imageIndex(action.image); err != nil {
			return err
		}
	}

	var actionText string
	if s := action.shortcut; tb.buttonStyle == ToolBarButtonImageOnly && s.Key != 0 {
		actionText = fmt.Sprintf("%s (%s)", action.Text(), s.String())
	} else {
		actionText = action.Text()
	}

	if len(actionText) != 0 {
		*text = uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(actionText)))
	} else if len(action.toolTip) != 0 {
		*text = uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(action.toolTip)))
	}