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  • Using the drawing functions
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Stored procedures
Draws a rectangle:
  • in an Image control,
  • Versions 17 and later
    Reports and QueriesWindows in an Image variable.
    New in version 17
    Reports and QueriesWindows in an Image variable.
    Reports and QueriesWindows in an Image variable.
    in an Image variable.
// Initialize the drawing in an Image control
dStartDrawing(IMG_Drawing)
 
// Draw a rectangle whose background is light yellow
// and whose border is light blue
dRectangle(10, 10, 50, 50, LightYellow, LightBlue)
Versions 24 and later
Reports and Queries
// Draw a rectangle whose background is light yellow
// and whose border is light blue
dRectangle(IMG_Drawing, 10, 10, 50, 50, LightYellow, LightBlue)
New in version 24
Reports and Queries
// Draw a rectangle whose background is light yellow
// and whose border is light blue
dRectangle(IMG_Drawing, 10, 10, 50, 50, LightYellow, LightBlue)
Reports and Queries
// Draw a rectangle whose background is light yellow
// and whose border is light blue
dRectangle(IMG_Drawing, 10, 10, 50, 50, LightYellow, LightBlue)
Syntax

Drawing a rectangle by specifying the coordinates of rectangle Hide the details

dRectangle([<Image>, ] <X1> , <Y1> , <X2> , <Y2> [, <Background> [, <Line>]])
<Image>: Optional control name or optional Image, WDPic or picLayer variable
Versions 24 and later
Reports and QueriesWindows Image to use. This image can correspond to:
  • the name of an Image control.
  • the name of an Image variable.
If this parameter is not specified, it is necessary to define the drawing destination with dStartDrawing.
New in version 24
Reports and QueriesWindows Image to use. This image can correspond to:
  • the name of an Image control.
  • the name of an Image variable.
If this parameter is not specified, it is necessary to define the drawing destination with dStartDrawing.
Reports and QueriesWindows Image to use. This image can correspond to:
  • the name of an Image control.
  • the name of an Image variable.
If this parameter is not specified, it is necessary to define the drawing destination with dStartDrawing.
<X1>: Integer
X coordinate (in pixels) of top left corner of rectangle.
<Y1>: Integer
Y coordinate (in pixels) of top left corner of rectangle.
<X2>: Integer
X coordinate (in pixels) of bottom right corner of rectangle.
<Y2>: Integer
Y coordinate (in pixels) of bottom right corner of rectangle.
<Background>: Integer, constant or Background variable (optional)
  • Background color of rectangle. This color can be:
  • Characteristics of background:
    • characteristics specified in the last call to dBackground if this parameter is not specified.
To use a gradient background color, call dRectangleGradient.
<Line>: Integer, constant or Border variable (optional)
  • Color of rectangle line. This color can be:
    • an RGB color (returned by RGB),
    • an HSL color (returned by HSL),
    • a preset color of WLanguage,
    • identical to the color used for the background if this parameter is not specified and if dPen was not used.
  • Characteristics of the line:
    • characteristics specified in the last call to dPen if this parameter is not specified.
Remarks

Coordinates

The coordinates are given in relation to the top left corner of the image or Image control ((0, 0) coordinates).

Using the drawing functions

The drawing functions can be used according to 2 methods:
  • Method 1: Using dStartDrawing
    • dStartDrawing must be called before any other drawing function. dStartDrawing is used to define the element (Image control or variable) to which the drawing functions will be applied.
    • When drawing on an Image control:
      • The drawing functions operate on a copy ("bitmap") of the image. You can use the drawing functions of Windows (via API or CallDLL32) but these functions must use the DC (Device Context) returned by dStartDrawing.
      • dEndDrawing and dStartDrawing must not be called in the same process.
        The drawing will not be displayed if dEndDrawing and dStartDrawing are called in the same process: it will be automatically erased.
  • Versions 24 and later
    Reports and QueriesWindows Method 2: indicating the drawing target directly in the syntax (via a parameter)
    The <Image> parameter is used to specify directly the target of the drawing. dStartDrawing becomes useless. This function must be deleted.
    New in version 24
    Reports and QueriesWindows Method 2: indicating the drawing target directly in the syntax (via a parameter)
    The <Image> parameter is used to specify directly the target of the drawing. dStartDrawing becomes useless. This function must be deleted.
    Reports and QueriesWindows Method 2: indicating the drawing target directly in the syntax (via a parameter)
    The <Image> parameter is used to specify directly the target of the drawing. dStartDrawing becomes useless. This function must be deleted.
Related Examples:
The drawing functions 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
Business / GUI classification : Neutral code
Component : wd250pnt.dll
Minimum version required
  • Version 9
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