func (c *controlSingleHWNDWithText) setText(text string) {
t := toUTF16(text)
C.setWindowText(c.hwnd, t)
c.textlen = C.controlTextLength(c.hwnd, t)
}
func baseSetText(c textableControl, text string) {
hwnd := c.hwnd()
t := toUTF16(text)
C.setWindowText(hwnd, t)
c.settextlen(C.controlTextLength(hwnd, t))
}