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- Use in prefixed syntax
- Characteristics of drawings in the browser
- Drawing in Browser code
- Drawing with management of opacity
- Pattern and PHP
<Image>.StartDrawing (Function) In french: <Image>.DébutDessin
// Start drawing in the "IMG_ImageDrawing" control ResDrawing = IMG_ImageDrawing.StartDrawing() // Drawings performed in the "IMG_ImageDrawing" control ... // End of drawing in the "IMG_ImageDrawing" control
IMG_Image1.StartDrawing() IMG_Image1.Font("Arial", 12, iNormal, 0) IMG_Image1.DrawText(4, 0, "I'm writing in an Image control!")
Syntax
<Result> = <Image control>.StartDrawing([<Options>])
<Result>: System integer - Memory DC (device context) of the Image control,
- 0 if an error occurs. This parameter can be used to call system routines (functions of Windows API). In this case, we recommend that you use a system integer.
<Image control>: Control name Name of the Image control to use. <Options>: Optional Integer constant (or combination of constants) Drawing options: | | Versions 22 and laterdDisplayAsynchronous New in version 22dDisplayAsynchronous dDisplayAsynchronous | | Versions 16 and laterdDisplayManual New in version 16dDisplayManual dDisplayManual | | dWithOpacity | Allows the opacity to be managed in the different drawing functions used by the Image control. Used for example to create a drawing saved in PNG format with management of alpha layer.
| dErase (Default value) | Erases the drawing found in the Image control. | dGridlinesOpacity | The drawing is displayed over gridlines in order to highlight the transparent or semi-transparent sections of drawing. The gridlines are not saved in the image.
| dNoErase | Does not erase the drawing found in the Image control. | dOnChart | Used to draw in an Image control in which a chart was already drawn. In this case, the chart drawing is not erased.
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Related Examples:
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Unit examples (WINDEV): The drawing functions
[ + ] Using the main drawing functions of WINDEV to: - Initialize an Image control for drawing - Draw simple shapes - Write a text into a drawing - Change the color in a drawing
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