(1) 新建Standard Visual用户对象uo_transparent_st,类型为定义实例变量:
Boolean ib_painting
(2) 编写uo_transparent_st的Constructor 事件脚本:
// 透明色 536870912
This.backcolor = 2^29
(3) 定义用户对象uo_transparent_st的用户事件ue_paint(Event ID:pbm_paint),并编写脚本如下:
IF IsValid(This) THEN
if ib_painting THEN Return 0
ib_painting = True
This.Visible = False
Do While Yield()
Loop
This.Visible = True
ib_painting = False
END IF</P><P>Return 0
……