PC SOFT

WINDEVWEBDEV AND WINDEV MOBILE
ONLINE HELP

Home | Sign in | English UK
  • Font
  • Background color
  • Coordinates
  • Management of '&'
  • Using the drawing functions
  • Limitations
  • 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
Draws a text:
  • in an Image control,
  • Versions 17 and later
    WINDEVWEBDEV - Server codeReports and QueriesWindowsLinuxUser code (UMC) in an Image variable.
    New in version 17
    WINDEVWEBDEV - Server codeReports and QueriesWindowsLinuxUser code (UMC) in an Image variable.
    WINDEVWEBDEV - Server codeReports and QueriesWindowsLinuxUser code (UMC) in an Image variable.
    in an Image variable.
    WEBDEV - Browser codeWindows MobilePHP This type of variable is not available.
  • Versions 25 and later
    WINDEVWEBDEV - Server code in a WDPic variable (on the background layer),
    New in version 25
    WINDEVWEBDEV - Server code in a WDPic variable (on the background layer),
    WINDEVWEBDEV - Server code in a WDPic variable (on the background layer),
  • Versions 25 and later
    WINDEVWEBDEV - Server code in a picLayer variable.
    New in version 25
    WINDEVWEBDEV - Server code in a picLayer variable.
    WINDEVWEBDEV - Server code in a picLayer variable.
Versions 15 and later
WEBDEV - Server codeLinux 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
WEBDEV - Server codeLinux 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.
WEBDEV - Server codeLinux 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
Android This function is now available for Android applications.
WEBDEV - Browser code This function is now available in Browser code.
New in version 16
Android This function is now available for Android applications.
WEBDEV - Browser code This function is now available in Browser code.
Android This function is now available for Android applications.
WEBDEV - Browser code This function is now available in Browser code.
Versions 17 and later
iPhone/iPad This function is now available for iPhone/iPad applications.
New in version 17
iPhone/iPad This function is now available for iPhone/iPad applications.
iPhone/iPad This function is now available for iPhone/iPad 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.
// Initialize the drawing in an Image control
dStartDrawing(IMG_Drawing)
 
// Draw a text in light yellow
dText(10, 20, "Easy development", LightYellow)
// Calculate the size of a text
nTextWidth is int
dStartDrawing(IMG_Image1)
dText(X, Y, MyText)

nTextWidth = TextWidth(EDT_Edit1, MyText)
dText(X + nTextWidth, Y, MyNextText)
Versions 24 and later
WINDEVWEBDEV - Server codeReports and QueriesiPhone/iPadUniversal Windows 10 AppWindows MobileAjaxUser code (UMC)
// Draw a text in light yellow
dText(IMG_Drawing, 10, 20, "Easy development", LightYellow)
New in version 24
WINDEVWEBDEV - Server codeReports and QueriesiPhone/iPadUniversal Windows 10 AppWindows MobileAjaxUser code (UMC)
// Draw a text in light yellow
dText(IMG_Drawing, 10, 20, "Easy development", LightYellow)
WINDEVWEBDEV - Server codeReports and QueriesiPhone/iPadUniversal Windows 10 AppWindows MobileAjaxUser code (UMC)
// Draw a text in light yellow
dText(IMG_Drawing, 10, 20, "Easy development", LightYellow)
Syntax
dText([<Image>, ] <X coordinate> , <Y coordinate> , <Text> [, <Text color> [, <Management of &>]])
<Image>: Optional control name or optional Image, WDPic or picLayer variable
Versions 24 and later
Reports and QueriesWindowsLinuxAndroidiPhone/iPadUniversal Windows 10 AppWindows MobileJavaUser code (UMC) Image to use. This image can correspond to:
  • the name of an Image control.
  • the name of an Image variable.
    Windows Mobile This type of variable is not available.
  • Versions 25 and later
    WINDEVWEBDEV - Server code the name of a WDPic variable. Only the background layer will be handled.
    New in version 25
    WINDEVWEBDEV - Server code the name of a WDPic variable. Only the background layer will be handled.
    WINDEVWEBDEV - Server code the name of a WDPic variable. Only the background layer will be handled.
  • Versions 25 and later
    WINDEVWEBDEV - Server code the name of a picLayer variable.
    New in version 25
    WINDEVWEBDEV - Server code the name of a picLayer variable.
    WINDEVWEBDEV - Server code the name of a picLayer variable.
If this parameter is not specified, it is necessary to define the drawing destination with dStartDrawing.
New in version 24
Reports and QueriesWindowsLinuxAndroidiPhone/iPadUniversal Windows 10 AppWindows MobileJavaUser code (UMC) Image to use. This image can correspond to:
  • the name of an Image control.
  • the name of an Image variable.
    Windows Mobile This type of variable is not available.
  • Versions 25 and later
    WINDEVWEBDEV - Server code the name of a WDPic variable. Only the background layer will be handled.
    New in version 25
    WINDEVWEBDEV - Server code the name of a WDPic variable. Only the background layer will be handled.
    WINDEVWEBDEV - Server code the name of a WDPic variable. Only the background layer will be handled.
  • Versions 25 and later
    WINDEVWEBDEV - Server code the name of a picLayer variable.
    New in version 25
    WINDEVWEBDEV - Server code the name of a picLayer variable.
    WINDEVWEBDEV - Server code the name of a picLayer variable.
If this parameter is not specified, it is necessary to define the drawing destination with dStartDrawing.
Reports and QueriesWindowsLinuxAndroidiPhone/iPadUniversal Windows 10 AppWindows MobileJavaUser code (UMC) Image to use. This image can correspond to:
  • the name of an Image control.
  • the name of an Image variable.
    Windows Mobile This type of variable is not available.
  • Versions 25 and later
    WINDEVWEBDEV - Server code the name of a WDPic variable. Only the background layer will be handled.
    New in version 25
    WINDEVWEBDEV - Server code the name of a WDPic variable. Only the background layer will be handled.
    WINDEVWEBDEV - Server code the name of a WDPic variable. Only the background layer will be handled.
  • Versions 25 and later
    WINDEVWEBDEV - Server code the name of a picLayer variable.
    New in version 25
    WINDEVWEBDEV - Server code the name of a picLayer variable.
    WINDEVWEBDEV - Server code the name of a picLayer variable.
If this parameter is not specified, it is necessary to define the drawing destination with dStartDrawing.
<X coordinate>: Integer
X coordinate of text to draw (in pixels).
<Y coordinate>: Integer
Y coordinate of text to draw (in pixels).
<Text>: Type corresponding to the text to draw
Text to draw. This text can be:
  • a string (without formatting marks such as TAB, CR, etc.),
  • a numeric.
<Text color>: Integer or constant (optional)
Text color to use. This color can correspond to:
If this parameter is not specified, the color of the text:
  • is Black if dPen was not used beforehand,
  • corresponds to the color specified in the last call to dPen.
<Management of &>: Optional boolean
  • True (default value) if the "&" character must not be interpreted as an underline operator.
  • False if the "&" character must be interpreted as an underline operator: the character following the "&" character will be underlined.
Versions 16 and later
WEBDEV - Browser code If this parameter is set to False, the "&" character will not be displayed but the following character will not be underlined.
New in version 16
WEBDEV - Browser code If this parameter is set to False, the "&" character will not be displayed but the following character will not be underlined.
WEBDEV - Browser code If this parameter is set to False, the "&" character will not be displayed but the following character will not be underlined.
Remarks

Font

By default:
  • The font used is "MS Sans Serif" (size 13).
  • The writing direction is horizontal (from left to right).
  • The coordinates of the top left corner of the image are (0,0).
  • The "&" character is not interpreted.
To modify these parameters, use dFont.
AndroidJava The default font may differ according to the system on which the application is run.

Background color

By default, the background color of an Image control is transparent. To modify the background color of an Image control, use ..BackgroundColor.

Coordinates

The coordinates are given in relation to the top left corner of the image or Image control ((0, 0) coordinates).
The coordinates correspond to the top left corner of the rectangle into which the text will be drawn. The precise location of the text in this rectangle depends on the size, shape and attributes of the font.

Management of '&'

The parameter <Management of & > makes it possible to manage the use of the '&' character. Example:
  • the "&" character must not be interpreted as an underline operator. For example:
    dText(10, 10, "Tom&Jerry", LightRed, True)

    will display "Tom&Jerry".
  • the "&" character must be interpreted as an underline operator: the character following the "&" character will be underlined. For example:
    dText(10, 10, "&Edit", LightRed, False)

    will display "Edit".

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 QueriesWindowsLinuxAndroidiPhone/iPadUniversal Windows 10 AppJavaUser 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. This function must be deleted.
    Versions 25 and later
    AndroidJava This syntax is now available.
    New in version 25
    AndroidJava This syntax is now available.
    AndroidJava This syntax is now available.
    New in version 24
    Reports and QueriesWindowsLinuxAndroidiPhone/iPadUniversal Windows 10 AppJavaUser 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. This function must be deleted.
    Versions 25 and later
    AndroidJava This syntax is now available.
    New in version 25
    AndroidJava This syntax is now available.
    AndroidJava This syntax is now available.
    Reports and QueriesWindowsLinuxAndroidiPhone/iPadUniversal Windows 10 AppJavaUser 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. This function must be deleted.
    Versions 25 and later
    AndroidJava This syntax is now available.
    New in version 25
    AndroidJava This syntax is now available.
    AndroidJava This syntax is now available.
WINDEVWEBDEV - Server codeReports and QueriesAndroidiPhone/iPadWindows MobileJavaPHPUser code (UMC)

Limitations

In anti-aliasing (dChangeMode) or opacity (dStartDrawing) mode, dText is only available for True Type fonts.
PHP The anti-aliasing mode is not available.
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 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 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 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.
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 : wd250pnt.dll
Minimum version required
  • Version 9
This page is also available for…
Comments
Click [Add] to post a comment