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'自绘图窗体界面
hDC1 = TopCaptionPic.hdc
hDC2 = Me.hdc
Call SetStretchBltMode(hDC2, STRETCH_HALFTONE)
Rtn = StretchBlt(hDC2, 0, 0, Me.ScaleWidth, TopCaptionPic.ScaleHeight, hDC1, 0, 0, TopCaptionPic.ScaleWidth, TopCaptionPic.ScaleHeight, SRCCOPY)
hDC1 = LeftSidePic.hdc
Rtn = StretchBlt(hDC2, 0, TopCaptionPic.ScaleHeight, LeftSidePic.ScaleWidth - 1, LeftSidePic.ScaleHeight, hDC1, 0, 0, LeftSidePic.ScaleWidth, LeftSidePic.ScaleHeight, SRCCOPY)
hDC1 = RightSidePic.hdc
Rtn = StretchBlt(hDC2, Me.ScaleWidth - RightSidePic.ScaleWidth + 1, TopCaptionPic.ScaleHeight, RightSidePic.ScaleWidth - 1, RightSidePic.ScaleHeight, hDC1, 0, 0, RightSidePic.ScaleWidth, RightSidePic.ScaleHeight, SRCCOPY)
hDC1 = BottomSidePic.hdc
Rtn = StretchBlt(hDC2, 0, Me.ScaleHeight - BottomSidePic.ScaleHeight, Me.ScaleWidth, BottomSidePic.ScaleHeight, hDC1, 0, 0, BottomSidePic.ScaleWidth, BottomSidePic.ScaleHeight, SRCCOPY)
Me.Refresh