Method ControlRedraw

source/script_gui.cpp:2086–2102

void GuiType::ControlRedraw(GuiControlType &aControl, bool aOnlyWithinTab)
{
	if (   !aOnlyWithinTab
		|| FindTabControl(aControl.tab_control_index) && IsWindowVisible(aControl.hwnd)   )
	{
		RECT rect;
		GetWindowRect(aControl.hwnd, &rect); // Limit it to only that part of the client area that is receiving the rect.
		MapWindowPoints(NULL, mHwnd, (LPPOINT)&rect, 2); // Convert rect to client coordinates (not the same as GetClientRect()).
		InvalidateRect(mHwnd, &rect, TRUE); // Seems safer to use TRUE, not knowing all possible overlaps, etc.
		//Overkill: InvalidateRect(mHwnd, NULL, FALSE); // Erase doesn't seem to be necessary.
		// None of the following is enough:
		//Changes focused control, so no good: ControlUpdateCurrentTab(*tab_control, false);
		//RedrawWindow(tab_control->hwnd, NULL, NULL, 0 ..or.. RDW_INVALIDATE);
		//InvalidateRect(aControl.hwnd, NULL, TRUE);
		//InvalidateRect(tab_control->hwnd, NULL, TRUE);
	}
}