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  • dEndDrawing function
  • Drawing in PHP
  • Drawing in Browser code
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
Reverses the colors:
  • of an Image control,
  • Versions 17 and later
    WINDEVWEBDEV - Server codeWINDEV MobileReports and QueriesWindowsLinuxiPhone/iPadUser code (UMC) in an Image variable.
    New in version 17
    WINDEVWEBDEV - Server codeWINDEV MobileReports and QueriesWindowsLinuxiPhone/iPadUser code (UMC) in an Image variable.
    WINDEVWEBDEV - Server codeWINDEV MobileReports and QueriesWindowsLinuxiPhone/iPadUser code (UMC) in an Image variable.     in an Image variable.
    WEBDEV - Browser codePHP This type of variable is not available.
Versions 16 and later
WEBDEV - Browser code This function is now available in Browser code.
New in version 16
WEBDEV - Browser code This function is now available in Browser code.
WEBDEV - Browser code This function is now available in Browser code.
Versions 17 and later
WINDEVLinux This function is now available for the WINDEV applications in Linux.
WEBDEV - Server codeLinux This function is now available for the WEBDEV sites in Linux.
iPhone/iPad This function is now available for the iPhone/iPad applications.
Linux Caution: A specific configuration is required to use this function in Linux. See The drawings for more details.
New in version 17
WINDEVLinux This function is now available for the WINDEV applications in Linux.
WEBDEV - Server codeLinux This function is now available for the WEBDEV sites in Linux.
iPhone/iPad This function is now available for the iPhone/iPad applications.
Linux Caution: A specific configuration is required to use this function in Linux. See The drawings for more details.
WINDEVLinux This function is now available for the WINDEV applications in Linux.
WEBDEV - Server codeLinux This function is now available for the WEBDEV sites in Linux.
iPhone/iPad This function is now available for the iPhone/iPad applications.
Linux Caution: A specific configuration is required to use this function in Linux. See The drawings for more details.
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 23 and later
Android This function is now available for the Android applications.
Android Widget This function is now available in Android Widget mode.
New in version 23
Android This function is now available for the Android applications.
Android Widget This function is now available in Android Widget mode.
Android This function is now available for the Android applications.
Android Widget This function is now available in Android Widget mode.
Example
// Reverses the colors of the IMG_Image1 control
Result1 is boolean
Result1 = dInvertColor(IMG_Image1)
IF Result1 = False THEN Error("The operation failed")
Syntax
<Result> = dInvertColor(<Image Name>)
<Result>: Boolean
  • True if the inversion of colors was performed,
  • False otherwise.
<Image Name>: Character string (with or without quotes) or Image variable
Image to use. This image can correspond:
  • the name of an Image control.
  • Versions 17 and later
    WINDEVWEBDEV - Server codeWINDEV MobileReports and QueriesWindowsLinuxiPhone/iPadUser code (UMC) the name of an Image variable.
    New in version 17
    WINDEVWEBDEV - Server codeWINDEV MobileReports and QueriesWindowsLinuxiPhone/iPadUser code (UMC) the name of an Image variable.
    WINDEVWEBDEV - Server codeWINDEV MobileReports and QueriesWindowsLinuxiPhone/iPadUser code (UMC) the name of an Image variable.     the name of an Image variable.
    WEBDEV - Browser codePHP This type of variable is not available.
Each pixel found in the image takes the opposite color from its initial color (bit-to-bit reversal). The image used is directly modified.
Remarks

dEndDrawing function

The transformation of the image will not be displayed if dEndDrawing and dInvertColor are called in the same process.
PHP

Drawing in 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.
Versions 16 and later
WEBDEV - Browser code

Drawing in Browser code

Some drawing functions are available in Browser code. The drawing functions in Browser code are based on the HTML 5 standard. More specifically, these functions are based on the "canvas" tag of HTML 5.
The drawing features in browser code are available for the recent browsers only (supporting the HTML 5 standard). To find out whether the drawing features are proposed by your browser, use DrawingAvailable.
Caution: To use the drawing functions with Internet Explorer 9, the project must "include the reference to the DTD file". This option is available in the "Advanced" tab of description window of project ("Project .. Project description"), "Advanced" button, "W3C standard" option.
Caution: To use the drawing functions with Internet Explorer 9, the project must "include the reference to the DTD file". This option is available in the "Advanced" tab of the description window of the project ("Project .. Project description").
Caution: To use the drawing functions with Internet Explorer 9, the project must include the reference to the DTD file. To do so, the HTML mode must be "HTML 4.01 Transitional + DTD". This option is available in the "Advanced" tab of the description window of project.
Reminder: To display the description window of the project, on the "Project" pane, in the "Project" group, click "Description".
Special case: Drawing in the browser of an Android phone: The browser drawing functions are only available starting with version 3 of Android.
New in version 16
WEBDEV - Browser code

Drawing in Browser code

Some drawing functions are available in Browser code. The drawing functions in Browser code are based on the HTML 5 standard. More specifically, these functions are based on the "canvas" tag of HTML 5.
The drawing features in browser code are available for the recent browsers only (supporting the HTML 5 standard). To find out whether the drawing features are proposed by your browser, use DrawingAvailable.
Caution: To use the drawing functions with Internet Explorer 9, the project must "include the reference to the DTD file". This option is available in the "Advanced" tab of description window of project ("Project .. Project description"), "Advanced" button, "W3C standard" option.
Caution: To use the drawing functions with Internet Explorer 9, the project must "include the reference to the DTD file". This option is available in the "Advanced" tab of the description window of the project ("Project .. Project description").
Caution: To use the drawing functions with Internet Explorer 9, the project must include the reference to the DTD file. To do so, the HTML mode must be "HTML 4.01 Transitional + DTD". This option is available in the "Advanced" tab of the description window of project.
Reminder: To display the description window of the project, on the "Project" pane, in the "Project" group, click "Description".
Special case: Drawing in the browser of an Android phone: The browser drawing functions are only available starting with version 3 of Android.
WEBDEV - Browser code

Drawing in Browser code

Some drawing functions are available in Browser code. The drawing functions in Browser code are based on the HTML 5 standard. More specifically, these functions are based on the "canvas" tag of HTML 5.
The drawing features in browser code are available for the recent browsers only (supporting the HTML 5 standard). To find out whether the drawing features are proposed by your browser, use DrawingAvailable.
Caution: To use the drawing functions with Internet Explorer 9, the project must "include the reference to the DTD file". This option is available in the "Advanced" tab of description window of project ("Project .. Project description"), "Advanced" button, "W3C standard" option.
Caution: To use the drawing functions with Internet Explorer 9, the project must "include the reference to the DTD file". This option is available in the "Advanced" tab of the description window of the project ("Project .. Project description").
Caution: To use the drawing functions with Internet Explorer 9, the project must include the reference to the DTD file. To do so, the HTML mode must be "HTML 4.01 Transitional + DTD". This option is available in the "Advanced" tab of the description window of project.
Reminder: To display the description window of the project, on the "Project" pane, in the "Project" group, click "Description".
Special case: Drawing in the browser of an Android phone: The browser drawing functions are only available starting with version 3 of Android.
Components
WINDEVWEBDEV - Server codeReports and Queries wd230pnt.dll
Windows Mobile wp230pnt.dll
WEBDEV - Browser code WDJS.DLL
Java wd230java.jar
Linux wd230pnt.so
Android wd230android.jar
See also
Minimum required version
  • Version 9
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