func (tb *ToolBar) WndProc(hwnd win.HWND, msg uint32, wParam, lParam uintptr) uintptr {
switch msg {
case win.WM_COMMAND:
switch win.HIWORD(uint32(wParam)) {
case win.BN_CLICKED:
actionId := uint16(win.LOWORD(uint32(wParam)))
if action, ok := actionsById[actionId]; ok {
action.raiseTriggered()
return 0
}
}
case win.WM_NOTIFY:
nmhdr := (*win.NMHDR)(unsafe.Pointer(lParam))
switch int32(nmhdr.Code) {
case win.TBN_DROPDOWN:
nmtb := (*win.NMTOOLBAR)(unsafe.Pointer(lParam))
actionId := uint16(nmtb.IItem)
if action := actionsById[actionId]; action != nil {
var r win.RECT
if 0 == tb.SendMessage(win.TB_GETRECT, uintptr(actionId), uintptr(unsafe.Pointer(&r))) {
break
}
p := win.POINT{r.Left, r.Bottom}
if !win.ClientToScreen(tb.hWnd, &p) {
break
}
win.TrackPopupMenuEx(
action.menu.hMenu,
win.TPM_NOANIMATION,
p.X,
p.Y,
tb.hWnd,
nil)
return win.TBDDRET_DEFAULT
}
}
}
return tb.WidgetBase.WndProc(hwnd, msg, wParam, lParam)
}
func (sb *SplitButton) WndProc(hwnd win.HWND, msg uint32, wParam, lParam uintptr) uintptr {
switch msg {
case win.WM_NOTIFY:
switch ((*win.NMHDR)(unsafe.Pointer(lParam))).Code {
case win.BCN_DROPDOWN:
dd := (*win.NMBCDROPDOWN)(unsafe.Pointer(lParam))
p := win.POINT{dd.RcButton.Left, dd.RcButton.Bottom}
win.ClientToScreen(sb.hWnd, &p)
win.TrackPopupMenuEx(
sb.menu.hMenu,
win.TPM_NOANIMATION,
p.X,
p.Y,
sb.hWnd,
nil)
return 0
}
}
return sb.Button.WndProc(hwnd, msg, wParam, lParam)
}