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  • Coordinates
  • Using the drawing functions
WINDEV
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Stored procedures
Draws a line:
  • 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 16 and later
Universal Windows 10 App This function is now available for Windows Phone applications.
New in version 16
Universal Windows 10 App This function is now available for Windows Phone applications.
Universal Windows 10 App This function is now available for Windows Phone applications.
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)

// Draw a line in light yellow
dLine(10, 10, 50, 50, LightYellow)
Versions 24 and later
WINDEVUniversal Windows 10 AppUser code (UMC)
// Draw a line in light yellow
dLine(IMG_Drawing, 10, 10, 50, 50, LightYellow)
New in version 24
WINDEVUniversal Windows 10 AppUser code (UMC)
// Draw a line in light yellow
dLine(IMG_Drawing, 10, 10, 50, 50, LightYellow)
WINDEVUniversal Windows 10 AppUser code (UMC)
// Draw a line in light yellow
dLine(IMG_Drawing, 10, 10, 50, 50, LightYellow)
Syntax
dLine([<Image>, ] <X1> , <Y1> , <X2> , <Y2> [, <Line color> [, <Line thickness>]])
<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.
<X1>: Integer
X coordinate (in pixels) of the start point of the line.
<Y1>: Integer
Y coordinate (in pixels) of the start point of the line.
<X2>: Integer
X coordinate (in pixels) of end point of the line.
<Y2>: Integer
Y coordinate (in pixels) of the end point of the line.
<Line color>: Integer or constant (optional)
Color of the line corresponding to:If this parameter is not specified, the line color:
  • is Transparent if dPen was not used beforehand,
  • corresponds to the color specified in the last call to dPen.
<Line thickness>: Optional integer
Thickness (in pixels) of the line to draw. If this parameter is not specified, the value taken into account is:
  • the last value specified during the last call to dPen.
  • 1 if dPen was not used beforehand.
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 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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