Method RequestLayout

window.go:1876–1922

RequestLayout either schedules or immediately starts performing layout.

()

// RequestLayout either schedules or immediately starts performing layout.
func (wb *WindowBase) RequestLayout() {
	var form Form

	hwnd := wb.hWnd
	window := wb.window

	for hwnd != 0 {
		if window != nil {
			var ok, visible bool
			if form, ok = window.(Form); ok {
				visible = form.Visible()
			} else {
				visible = window.AsWindowBase().visible
			}

			if !visible && window != wb.window || window.Suspended() {
				return
			}

			if container, ok := window.(Container); ok && container.Layout() == nil {
				return
			}

			if widget, ok := window.(Widget); ok {
				if window = widget.Parent(); window != nil {
					hwnd = window.Handle()
					continue
				}
			}
		} else if !win.IsWindowVisible(hwnd) {
			return
		}

		hwnd = win.GetParent(hwnd)
		window = windowFromHandle(hwnd)
	}

	if form == nil {
		return
	}

	if fb := form.AsFormBase(); fb.group.ActiveForm() != form || fb.inProgressEventCount == 0 {
		fb.startLayout()
	} else {
		fb.layoutScheduled = true
	}
}

// RightToLeftReading returns whether the reading order of the Window
// is from right to left.