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- Displaying a PNG image
- Transparent image in PNG format
<Image>.SavePNG (Function) In french: <Image>.SauvePNG
// Saves the image found in "IMG_ImageDrawing" in "C:\Documents\Image.PNG" ResSave = IMG_ImageDrawing.SavePNG("C:\Documents\Image.PNG")
// Saves in memory the image found in "IMG_ImageDrawing" ResSave = IMG_ImageDrawing.SavePNG(inMemory)
Syntax
Saving an image in memory Hide the details
<Result> = <Image control>.SavePNG(<inMemory> [, <Transparency color>])
<Result>: Buffer Byte string containing the image in PNG format. Then, this byte string can be assigned to an Image control, saved in a file (fSaveText), sent via a network (with the Socket functions), ...
<Image control>: Control name - Name of the Image control, Bar Code control or Web Camera control to save. The Image controls found in a report cannot be used.
Name of the Image control or Web Camera control to use. Name of the Image control to use.
<inMemory>: Constant inMemory: Constant used to save an image in memory. <Transparency color>: Optional integer Color that will be considered as being transparent in the image. This color can correspond to:If this parameter is not specified, the generated image is not transparent. Displaying a PNG image Caution: If the image in PNG format is semi-transparent, the display of the image is slower. Transparent image in PNG format To save a transparent image in PNG format, the Image control must be filled with the transparent color beforehand. Example used to draw a transparent line and to save it in PNG format:
IMG_Image1.StartDrawing(dWithOpacity) IMG_Image1.ChangeMode(drawDefault) FOR nI = 0 _TO_ IMG_Image1..Width FOR nJ = 0 _TO_ IMG_Image1..Height IMG_Image1.DrawPoint(nI, nJ, RGB(255,255,255), 0) END END IMG_Image1.Pen(RGB(100, 020, 200), 0,10, 100) IMG_Image1.DrawLine(10, 10, 100, 10) IMG_Image1.SavePNG(CompleteDir(fExeDir()) + "img.png")
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