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  • Font
  • Background color
  • Coordinates
  • Management of '&'
  • Using the drawing functions
  • Limitations
  • Pattern and PHP
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Stored procedures
Draws a text:
  • in an Image control,
  • in an Image variable.
    Windows MobilePHP This type of variable is not available.
Versions 16 and later
Android This function is now available for Android applications.
New in version 16
Android This function is now available for Android applications.
Android This function is now available for Android applications.
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
Universal Windows 10 AppWindows MobileiPhone/iPadUser code (UMC)Ajax
// Draw a text in light yellow
dText(IMG_Drawing, 10, 20, "Easy development", LightYellow)
New in version 24
Universal Windows 10 AppWindows MobileiPhone/iPadUser code (UMC)Ajax
// Draw a text in light yellow
dText(IMG_Drawing, 10, 20, "Easy development", LightYellow)
Universal Windows 10 AppWindows MobileiPhone/iPadUser code (UMC)Ajax
// 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
Universal Windows 10 AppWindows MobileAndroidiPhone/iPadJavaUser code (UMC) Image to use. This image can correspond to:
  • the name of an Image control.
  • on behalf of an Variable of type Image.
    Windows Mobile This type of variable is not available.
If this parameter is not specified, it is necessary to define the drawing destination with dStartDrawing.
New in version 24
Universal Windows 10 AppWindows MobileAndroidiPhone/iPadJavaUser code (UMC) Image to use. This image can correspond to:
  • the name of an Image control.
  • on behalf of an Variable of type Image.
    Windows Mobile This type of variable is not available.
If this parameter is not specified, it is necessary to define the drawing destination with dStartDrawing.
Universal Windows 10 AppWindows MobileAndroidiPhone/iPadJavaUser code (UMC) Image to use. This image can correspond to:
  • the name of an Image control.
  • on behalf of an Variable of type Image.
    Windows Mobile This type of variable is not available.
If this parameter is not specified, it is necessary to define the drawing destination with dStartDrawing.
<X coordinate>: entier
X coordinate of text to draw (in pixels).
<Y coordinate>: entier
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 the dPen function has not been used before,
  • corresponds to the Color specified in the last call to function 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.
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
    Universal Windows 10 AppAndroidiPhone/iPadJavaUser 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
    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
    Universal Windows 10 AppAndroidiPhone/iPadJavaUser 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
    AndroidJava This syntax is now available.
    New in version 25
    AndroidJava This syntax is now available.
    AndroidJava This syntax is now available.
    Universal Windows 10 AppAndroidiPhone/iPadJavaUser 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
    AndroidJava This syntax is now available.
    New in version 25
    AndroidJava This syntax is now available.
    AndroidJava This syntax is now available.
Windows MobileAndroidiPhone/iPadJavaUser code (UMC)PHP

Limitations

In anti-aliasing mode (dChangeMode function) or in opacity mode (dStartDrawing function), the dText function is only available for TrueType.
PHP The anti-aliasing mode is not 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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