PtVisible

PtVisible

VB声明

Declare Function PtVisible Lib "gdi32" Alias "PtVisible" (ByVal hdc As Long, ByVal x As Long, ByVal y As Long) As Long

说明

确定指定点是否可见(即,点是否在设备场景剪裁区内)

返回值

Long,若点在指定设备场景剪裁区内为非零值,否则为0

参数表

参数

类型及说明

hdc

Long,设备场景句柄

x

Long,要检查的点的x,y坐标

y

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