Trouble with drawing, I need some ideas :)

bluishfish.cn · October 23, 2007, 9:51am

If you want to setAlpha,you should use SetAplphaData.

like this:

def setAlphaValue(self,bmp,alpha):
# bmp is wx.Image
if not bmp.HasAlpha():
bmp.InitAlpha()

    bmp.SetAlphaData(chr(alpha)*bmp.GetWidth()*bmp.GetHeight())

···

2007-10-23

发件人： Christopher Barker

发送时间：
2007-10-18 01:16:33

收件人：
wxPython-users@lists.wxwidgets.org

抄送：

主题： Re: [wxPython-users] Re: Trouble with drawing, I need some ideas

Robin Dunn wrote:

By the way, what is the performance like drawing (blitting)

transparent bitmaps with DC (or GC)? It used to be very, very, slow to

Draw a masked Bitmap to a DC.

I’m not sure, but I expect that it varies widely by platform.

Probably so – I guess it’s time for some profiling!

-Chris

–

Christopher Barker, Ph.D.

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