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How do I get Tk to recognize the transparency in my GIF images?

April 26, 2017GIF images recognize tk transparency

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How do I get Tk to recognize the transparency in my GIF images?

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Tk uses a hack for transparency in GIF images. If you have a GIF89 image that has the transparency index set, you need to set the global Tcl variable TRANSPARENT_GIF_COLOR to the color which you want the show through (in general, the background of the widget you are placing it on).