Draws windowless controls on the control container.
在控件容器上绘制窗口控件
BOOL PaintWindowlessControls(
CDC *pDC
);
Parameters
pDC
The device context on which to draw the windowless controls.
要被绘制窗口控件的设备上下文
Return Value
Returns TRUE if there is a control container and the windowless controls are drawn successfully, otherwise FALSE.
如果被绘制的是控件容器并且窗口控件绘制成功则返回TRUE，否则返回FALSE