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  • Using the drawing functions
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Stored procedures
Declares the default background color for the rectangles, circles, ... used:
  • in an Image control,
  • Versions 17 and later
    WINDEVWindowsLinuxUser code (UMC) in an Image variable.
    New in version 17
    WINDEVWindowsLinuxUser code (UMC) in an Image variable.
    WINDEVWindowsLinuxUser code (UMC) in an Image variable.
    in an Image variable.
Versions 15 and later
Linux This function is now available for WEBDEV sites in Linux.
Linux Caution: A specific configuration is required to use this function in Linux. See The drawings for more details.
New in version 15
Linux This function is now available for WEBDEV sites in Linux.
Linux Caution: A specific configuration is required to use this function in Linux. See The drawings for more details.
Linux This function is now available for WEBDEV sites in Linux.
Linux Caution: A specific configuration is required to use this function in Linux. See The drawings for more details.
Versions 18 and later
Universal Windows 10 App This function is now available in Windows Store apps mode.
New in version 18
Universal Windows 10 App This function is now available in Windows Store apps mode.
Universal Windows 10 App This function is now available in Windows Store apps mode.
Versions 21 and later
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
New in version 21
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Versions 24 and later
Java The syntax that manages the Color type is now available for Java applications.
New in version 24
Java The syntax that manages the Color type is now available for Java applications.
Java The syntax that manages the Color type is now available for Java applications.
// Initialize the drawing in an Image control
dStartDrawing(IMG_Drawing)

// Declare the background color of different drawings
// made in the Image control
dBackGround(LightGreen)
Versions 24 and later
WINDEVUniversal Windows 10 AppUser code (UMC)
// Declare the background color of different drawings
// made in the Image control IMG_Drawing
dBackGround(IMG_Drawing, LightGreen)
New in version 24
WINDEVUniversal Windows 10 AppUser code (UMC)
// Declare the background color of different drawings
// made in the Image control IMG_Drawing
dBackGround(IMG_Drawing, LightGreen)
WINDEVUniversal Windows 10 AppUser code (UMC)
// Declare the background color of different drawings
// made in the Image control IMG_Drawing
dBackGround(IMG_Drawing, LightGreen)
Syntax
dBackground([<Image>, ] <Color> [, <Fill style> [, <Type of hatching> [, <Opacity>]]])
<Image>: Optional control name or optional Image variable
Versions 24 and later
WindowsLinuxUniversal Windows 10 AppUser code (UMC) 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
WindowsLinuxUniversal Windows 10 AppUser code (UMC) 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.
WindowsLinuxUniversal Windows 10 AppUser code (UMC) 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.
<Color>: Integer or constant
Default background color of different drawings. This color corresponds to:
  • an RGB color (returned by RGB),
  • an HSL color (returned by HSL),
  • a preset color of WLanguage.
  • Versions 23 and later
    a Color variable. In this case, the opacity specified in the variable is taken into account.
    Java Not available.
    New in version 23
    a Color variable. In this case, the opacity specified in the variable is taken into account.
    Java Not available.
    a Color variable. In this case, the opacity specified in the variable is taken into account.
    Java Not available.
    a Color variable. In this case, the opacity specified in the variable is taken into account.
<Fill style>: Optional integer or Integer constant
Default background fill of different drawings:
  • 0 (by default): Solid background
  • 1: Transparent background (<Color> is ignored)
  • 2: Hatched background
Default background fill of different drawings:
BackgroundHatchedBackground filled with hatching.
Corresponds to value 2 for compatibility.
BackgroundSolid
(Default value)
Solid background.
Corresponds to value 0 for compatibility.
BackgroundTransparentTransparent background (<Color> is ignored).
Corresponds to value 1 for compatibility.
Universal Windows 10 App This value is ignored. In this version, you cannot hatch the background of a drawing.
<Type of hatching>: Optional integer
Default type of hatching for the background of different drawings. To use this parameter, the value of "Fill style" must be equal to 2. If the value of <Fill style> is different from 2, <Type of hatching> is ignored. The different types of hatching are:
  • 0: Horizontal hatching
  • 1: Vertical hatching
  • 2: Diagonal hatching at 60%
  • 3: Diagonal hatching at 120%
  • 4 (by default): Criss-crossed hatching
  • 5: Diagonal cross hatching
Universal Windows 10 App This value is ignored. In this version, you cannot hatch the background of a drawing.
<Opacity>: Optional integer
Opacity of color, included between 0 (transparent) and 255 (opaque). An opacity set to 128 is used to blend 50% of the color with the existing color found in the control.
Notes:
  • This opacity will be taken into account if the drawing was initialized with the dWithOpacity constant (dStartDrawing).
  • Versions 23 and later
    If the <Color> parameter corresponds to a Color variable, this parameter must not be specified: the opacity specified in the variable will be taken into account.
    New in version 23
    If the <Color> parameter corresponds to a Color variable, this parameter must not be specified: the opacity specified in the variable will be taken into account.
    If the <Color> parameter corresponds to a Color variable, this parameter must not be specified: the opacity specified in the variable will be taken into account.
Remarks

Using the drawing functions

The drawing functions can be used according to 2 methods:
  • Method 1: Using dDrawing
    • dStartDrawing must be called before any other drawing function. dStartDrawing is used to define the element (Image control or Image variable) onto 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
    WindowsLinuxUniversal Windows 10 AppUser 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.
    New in version 24
    WindowsLinuxUniversal Windows 10 AppUser 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.
    WindowsLinuxUniversal Windows 10 AppUser 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.
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
Component : wd240pnt.dll
Minimum version required
  • Version 9
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