view_settransparentcolor

#View.SetTransparentColor

##Syntax View.SetTransparentColor (colorNumber : int)

##Description The View.SetTransparentColor procedure sets the color in the Run window that should be considered transparent when a picture is drawn on the window using the picUnderMerge mode. If no color is specified, then the default background color (colorbg, usually white) is used as the transparent color. You can change this background color using RGB.SetColoron color 0.

##Details This call is often used when you want the Run window to have abackground color other than color 0.

##Example This program displays two images loaded from the same file. In the second image,the transparent color has been set to bright red (thatis, the parts of the image that are meant to be transparent are inbright red).

    const SIZE : int := 20
    procedure DrawCheckerBoard
        cls
        for x : 0 .. maxx by SIZE
            for y : 0 .. maxy by SIZE
                if ((x + y) div SIZE) mod 2 = 0 then
                    Draw.FillBox (x, y, x + SIZE, y + SIZE, brightgreen)
                end if
            end for
        end for
    end DrawCheckerBoard

    var pic : int := Pic.FileNew ("data files/airplane.bmp")
    Pic.SetTransparentColor (pic, brightred)
    RGB.SetColor (0, 1., 0., 0.)
    DrawCheckerBoard
    Pic.Draw (pic, 100, 100, picUnderMerge)
    View.SetTransparentColor (brightgreen)
    Pic.Draw (pic, 400, 100, picUnderMerge)

##Details View.SetTransparentColour is an alternate spelling for View.SetTransparentColor.

##Status Exported qualified.

This means that you can only call the function by calling View.SetTransparentColor, not by calling SetTransparentColor.

##See also pic_settransparentcolor.html.