简单问题,代码就10来行,请大家帮忙
Dim objbt As Bitmap
Dim objbtnew As Bitmap
objbt = New Bitmap("D:\pic187.JPg", True)
Dim objgp As Graphics
objgp = Graphics.FromImage(objbt)
objbtnew = New Bitmap("D:\pic188.jpg")
objbtnew.MakeTransparent(Color.FromArgb(PixelFormat.Format32bppPArgb))
objgp.DrawImage(objbtnew, 100, 100, 200, 200)
objbt.Save(Response.OutputStream, ImageFormat.Jpeg)
这里有两张图片,先载入PIC187,然后在载入PIC188
我想让PIC188在PIC187上显示,把PIC188设置成半透明的,透过它能看到PIC187
请问该如何设置?