Function initWindowWithCfg

window.go:547–709

(cfg *windowCfg)

}

func initWindowWithCfg(cfg *windowCfg) error {
	// We can't use sync.Once, because tooltip.go's init also calls InitWindow, so we deadlock.
	if atomic.CompareAndSwapUint32(&initedWalk, 0, 1) {
		runtime.LockOSThread()

		var initCtrls win.INITCOMMONCONTROLSEX
		initCtrls.DwSize = uint32(unsafe.Sizeof(initCtrls))
		initCtrls.DwICC = win.ICC_LINK_CLASS | win.ICC_LISTVIEW_CLASSES | win.ICC_PROGRESS_CLASS | win.ICC_TAB_CLASSES | win.ICC_TREEVIEW_CLASSES
		win.InitCommonControlsEx(&initCtrls)

		defaultWndProcPtr = syscall.NewCallback(defaultWndProc)
		for _, fn := range walkInit {
			fn()
		}
	}

	wb := cfg.Window.AsWindowBase()
	wb.window = cfg.Window
	wb.enabled = true
	wb.visible = cfg.Style&win.WS_VISIBLE != 0
	wb.calcTextSizeInfo2TextSize = make(map[calcTextSizeInfo]Size)
	wb.name2Property = make(map[string]Property)

	var hwndParent win.HWND
	var hMenu win.HMENU
	if cfg.Parent != nil {
		hwndParent = cfg.Parent.Handle()

		if widget, ok := cfg.Window.(Widget); ok {
			if container, ok := cfg.Parent.(Container); ok {
				if cb := container.AsContainerBase(); cb != nil {
					hMenu = win.HMENU(cb.NextChildID())
				}
				widget.AsWidgetBase().parent = container
			}
		}
	}

	var windowName *uint16
	if len(wb.name) != 0 {
		windowName = syscall.StringToUTF16Ptr(wb.name)
	}

	if hwnd := cfg.Window.Handle(); hwnd == 0 {
		var x, y, w, h int32
		if cfg.Bounds.IsZero() {
			x = win.CW_USEDEFAULT
			y = win.CW_USEDEFAULT
			w = win.CW_USEDEFAULT
			h = win.CW_USEDEFAULT
		} else {
			x = int32(cfg.Bounds.X)
			y = int32(cfg.Bounds.Y)
			w = int32(cfg.Bounds.Width)
			h = int32(cfg.Bounds.Height)
		}

		wb.hWnd = win.CreateWindowEx(