VB用Bitblt实现透明位图显示

发布时间：2020-12-17 08:17:51 所属栏目：百科来源：网络整理

导读：'API声明Private Declare Function BitBlt Lib "gdi32" ( ByVal hDestDC As Long,ByVal x As Long,ByVal y As Long,ByVal nWidth As Long,ByVal nHeight As Long,ByVal hSrcDC As Long,ByVal xSrc As Long,ByVal ySrc As Long,ByVal dwRop As Long ) As Long

'API声明
Private Declare Function BitBlt Lib "gdi32"   ( ByVal hDestDC As Long,ByVal x As Long,ByVal y As Long,ByVal nWidth As Long,ByVal nHeight As Long,ByVal hSrcDC As Long,ByVal xSrc As Long,ByVal ySrc As Long,ByVal dwRop As Long )   As Long

Private Sub Command1_Click (   )  
      BitBlt 目标图.hDC,( 目标图.Width / 2 - 掩码图.Width / 2 )   / 15,掩码图.Width / 15,掩码图.Height / 15,掩码图.hDC,vbSrcAnd
      BitBlt 目标图.hDC,源图.hDC,vbSrcInvert
End Sub

（编辑：李大同）

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