［声明］
Declare Function EqualRgn Lib "gdi32" Alias "EqualRgn" (ByVal hSrcRgn1 As Long, ByVal hSrcRgn2 As Long) As Long
［说明］
确定两个区域是否相等
［参数表］
hSrcRgn1 ------- Long，一个区域的句柄
hSrcRgn2 ------- Long，区域句柄
［返回值］
Long，若两区域相等为非零值。若不等为0。若有一个区域无效则返回ERRORAPI