ImageList.MaskUse Property

Specify $ TRUE for image transparency processing.

The part of the color specified by MaskColR, MaskColG, and MaskColB becomes the transparent color.

For example,

MaskUse = $ TRUE; MaskColR = 255; MaskColG = 0; MaskColB = 0;

Then, the red part of the image becomes a transparent color, and it becomes transparent instead of being displayed in red.

Use PNG format for images that want to use transparent colors. Due to the characteristics of the image, the JPEG format cannot make the transparent part one color.

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