PC SOFT

ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Home | Sign in | English EN
This content has been translated automatically. Click here to view the French version.
  • Drawing in anti-aliasing mode
  • Using the drawing functions
  • Pattern and PHP
WINDEV
WindowsLinuxUniversal Windows 10 AppJavaReports and QueriesUser code (UMC)
WEBDEV
WindowsLinuxPHPWEBDEV - Browser code
WINDEV Mobile
AndroidAndroid Widget iPhone/iPadApple WatchUniversal Windows 10 AppWindows Mobile
Others
Stored procedures
Colors an area:
  • in an Image control,
  • in an Image variable.
    PHP This type of variable is not available.
This coloring is applied to all the juxtaposed points that have the same color as the specified start point.
// Initialize the drawing in an Image control
dStartDrawing(IMG_Drawing)
 
// Color an area in light blue
dFill(10, 50, LightBlue)
Versions 24 and later
Reports and QueriesUser code (UMC)Ajax
// Color an area in light blue
dFill(IMG_Drawing, 10, 50, LightBlue)
New in version 24
Reports and QueriesUser code (UMC)Ajax
// Color an area in light blue
dFill(IMG_Drawing, 10, 50, LightBlue)
Reports and QueriesUser code (UMC)Ajax
// Color an area in light blue
dFill(IMG_Drawing, 10, 50, LightBlue)
Syntax
dFill([<Image>, ] <X> , <Y> [, <Fill color> [, <Border color>]])
<Image>: Optional control name or optional Image, WDPic or picLayer variable
Versions 24 and later
Reports and QueriesWindowsJavaUser 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
Reports and QueriesWindowsJavaUser 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.
Reports and QueriesWindowsJavaUser 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.
<X>: entier
X coordinate (in pixels) of the point inside the area to color. This position is given in relation to the top left corner of the image control (coordinates set to (0, 0)).
<Y>: entier
Y coordinate (in pixels) of the point inside the area to color. This position is given in relation to the top left corner of the image control (coordinates set to (0, 0)).
<Fill color>: Integer or constant (optional)
Color used to fill the area. This color can correspond to:
If this parameter is not specified, the fill color:
  • is Transparent if function dBackground has not been used before,
  • corresponds to the Color specified in the last call to function dBackground.
<Border color>: Integer or constant (optional)
Area border color. This color can correspond to:
If this parameter is not specified, the area border color adapts to the fill color.
Remarks

Drawing in anti-aliasing mode

When drawing in anti-aliasing mode (constant drawAntiAliasing in the dChangeMode function), the graphics card smoothes the points and colors used at the edges of the shapes.
In this case, <Border color> is not displayed in the drawing and the fill is applied to the entire drawing.

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.
PHP Limitation for dFill: The opacity defined by dBackground is ignored.
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
This page is also available for…
Comments
Click [Add] to post a comment