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  • Using the drawing functions
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Stored procedures
Draws a rectangle:
  • in an Image control,
  • in a variable of type Image.
  • WINDEV in a variable of type WDPic (on the background layer),
  • WINDEV in a variable of type picLayer.
Remark: To draw custom rectangles, it is recommended to use dBorder.
Linux Caution: A specific configuration is required to use this function in Linux. For more details, see The drawings.
// Initialize the drawing in an Image control
dStartDrawing(IMG_Drawing)
 
// Draw a rectangle with a light yellow background
// and light blue borders
dRectangle(10, 10, 50, 50, LightYellow, LightBlue)
WINDEVUniversal Windows 10 AppUser code (UMC)
// Draw a rectangle with a light yellow background
// and light blue borders
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
WindowsLinuxUniversal Windows 10 AppJavaUser code (UMC) Image to use. The image can correspond to:
  • the name of an Image control.
  • the name of a variable of type Image.
  • WINDEV the name of a variable of type WDPic. Only the background layer will be handled.
  • WINDEV the name of a variable of type picLayer.
If this parameter is not specified, it is necessary to define the drawing destination with dStartDrawing.
<X1>: Integer
X-coordinate (in pixels) of the upper-left corner of the rectangle.
<Y1>: Integer
Y-coordinate (in pixels) of the upper-left corner of the rectangle.
<X2>: Integer
X-coordinate (in pixels) of the lower-right corner of the rectangle.
<Y2>: Integer
Y-coordinate (in pixels) of the lower-right corner of the rectangle.
<Background>: Integer, constant or Background variable (optional)
  • Background color of rectangle. This color can be:
  • Background characteristics:
    • WINDEVUniversal Windows 10 App variable of type Background. In this case, the gradient defined in the variable is ignored.
    • 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 WLanguage preset color,
    • WINDEVUniversal Windows 10 App a variable of type Color,
    • identical to the color used for the background if this parameter is not specified and if dPen has not been used.
  • Characteristics of the line:
    • WINDEV variable of type Border. In this case, only the following properties are taken into account:
      • Color: if the property is set to ColorUndefined, the color defined in the last call to dPen is used. If this function has not been used, the background color of the rectangle will be used.
      • Thickness: if the property is set to ThicknessUndefined, the thickness defined in the last call to dPen is used. If this function has not been used, the thickness will be set to 1.
      • Line: if the property is set to LineUndefined, the type of line defined in the last call to dPen is used. If this function has not been used, the line will be solid.
      • characteristics specified in the last call to dPen if this parameter is not specified.
    WINDEVUniversal Windows 10 AppJava

    Drawing a rectangle via a Rectangle variable Hide the details

    dRectangle([<Image>, ] <Rectangle> [, <Background> [, <Line>]])
    <Image>: Optional control name or optional Image, WDPic or picLayer variable
    WindowsLinuxUniversal Windows 10 AppJavaUser code (UMC) Image to use. The image can correspond to:
    • the name of an Image control.
    • the name of a variable of type Image.
    • WINDEV the name of a variable of type WDPic. Only the background layer will be handled.
    • WINDEV the name of a variable of type picLayer.
    If this parameter is not specified, it is necessary to define the drawing destination with dStartDrawing.
    <Rectangle>: Rectangle variable
    Name of the Rectangle variable that defines the coordinates of the rectangle to draw.
    <Background>: Integer, constant or Background variable (optional)
    • Background color of rectangle. This color can be:
    • Background characteristics:
      • variable of type Background. In this case, the gradient defined in the variable is ignored.
        Java This type of variable is not available.
      • 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 WLanguage preset color,
      • a variable of type Color,
      • identical to the color used for the background if this parameter is not specified and if dPen has not been used.
    • Characteristics of the line:
      • WINDEV variable of type Border. In this case, only the following properties are taken into account:
        • Color: if the property is set to ColorUndefined, the color defined in the last call to dPen is used. If this function has not been used, the background color of the rectangle will be used.
        • Thickness: if the property is set to ThicknessUndefined, the thickness defined in the last call to dPen is used. If this function has not been used, the thickness will be set to 1.
        • Line: if the property is set to LineUndefined, the type of line defined in the last call to dPen is used. If this function has not been used, the line will be solid.
      • characteristics specified in the last call to dPen if this parameter is not specified.
    Remarks

    Coordinates

    Coordinates are specified with respect to the upper-left corner of the image or Image control (coordinates: (0,0)).

    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.
    • WindowsLinuxUniversal Windows 10 AppJavaUser code (UMC) 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 / UI classification: Neutral code
    Component: wd290pnt.dll
    Minimum version required
    • Version 9
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    Last update: 01/18/2024

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