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  • Coordinates
  • Using the drawing functions
  • Pattern and PHP
WINDEV
WindowsLinuxUniversal Windows 10 AppJavaReports and QueriesUser code (UMC)
WEBDEV
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WINDEV Mobile
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Others
Stored procedures
Draws a line:
  • in an Image control,
  • in an Image variable.
    PHP This type of variable is not available.
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
Reports and QueriesUser code (UMC)Ajax
// Draw a line in light yellow
dLine(IMG_Drawing, 10, 10, 50, 50, LightYellow)
New in version 24
Reports and QueriesUser code (UMC)Ajax
// Draw a line in light yellow
dLine(IMG_Drawing, 10, 10, 50, 50, LightYellow)
Reports and QueriesUser code (UMC)Ajax
// 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, WDPic or picLayer variable
Versions 24 and later
Reports and QueriesWindowsUser code (UMC) Image to use. This image can correspond to:
  • the name of an Image control.
  • on behalf of an Variable of type Image.
If this parameter is not specified, it is necessary to define the drawing destination with dStartDrawing.
New in version 24
Reports and QueriesWindowsUser code (UMC) Image to use. This image can correspond to:
  • the name of an Image control.
  • on behalf of an Variable of type Image.
If this parameter is not specified, it is necessary to define the drawing destination with dStartDrawing.
Reports and QueriesWindowsUser code (UMC) Image to use. This image can correspond to:
  • the name of an Image control.
  • on behalf of an Variable of type Image.
If this parameter is not specified, it is necessary to define the drawing destination with dStartDrawing.
<X1>: entier
X coordinate (in pixels) of the start point of the line.
<Y1>: entier
Y coordinate (in pixels) of the start point of the line.
<X2>: entier
X coordinate (in pixels) of end point of the line.
<Y2>: entier
Y coordinate (in pixels) of the end point of the line.
<Line color>: Integer or constant (optional)
Line color. This color can correspond to:If this parameter is not specified, the line color:
  • is Transparent if function dPen has not been used before,
  • corresponds to the Color specified in the last call to function dPen.
<Line thickness>: Optional integer
Thickness (in pixels) of the line to draw. If this parameter is not specified, the value taken into account can be:
  • the last value specified in 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 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 QueriesWindowsJavaUser 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. The dStartDrawing function becomes unnecessary. This function must be deleted.
    Versions 25 and later
    Java This syntax is now available.
    New in version 25
    Java This syntax is now available.
    Java This syntax is now available.
    New in version 24
    Reports and QueriesWindowsJavaUser 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. The dStartDrawing function becomes unnecessary. This function must be deleted.
    Versions 25 and later
    Java This syntax is now available.
    New in version 25
    Java This syntax is now available.
    Java This syntax is now available.
    Reports and QueriesWindowsJavaUser 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. The dStartDrawing function becomes unnecessary. This function must be deleted.
    Versions 25 and later
    Java This syntax is now available.
    New in version 25
    Java This syntax is now available.
    Java This syntax is now available.
PHP

Pattern and PHP

In PHP, the drawing functions are based on the graphic library GD. This library is commonly used by the PHP hosting companies and therefore it is always enabled. The version of the GD library must be version 2.0.28 (or later). This library can be downloaded from the PHP site.
To enable (if necessary) this library locally, the following elements are required:
  • PHP installed.
  • the PHP.INI file found in the Windows directory must contain the following line: "extension=php_gd2.dll" (instead of ";extension=php_gd2.dll").
  • the php_gd2.dll file must exist in the directory of PHP extensions. This directory is defined in the PHP.INI file by the "extension_dir" variable.
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: wd260pnt.dll
Minimum version required
  • Version 9
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