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  • Font
  • Background color
  • Coordinates
  • Management of '&'
  • Using the drawing functions
  • Limitations
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Stored procedures
Draws a text:
  • in an Image control,
  • Versions 17 and later
    Reports and QueriesWindows in an Image variable.
    New in version 17
    Reports and QueriesWindows in an Image variable.
    Reports and QueriesWindows in an Image variable.
    in an Image variable.
// 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
Reports and Queries
// Draw a text in light yellow
dText(IMG_Drawing, 10, 20, "Easy development", LightYellow)
New in version 24
Reports and Queries
// Draw a text in light yellow
dText(IMG_Drawing, 10, 20, "Easy development", LightYellow)
Reports and Queries
// 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 variable
Versions 24 and later
Reports and QueriesWindows 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 QueriesWindows 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 QueriesWindows 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 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 character string (without control characters such as TAB, CR, etc.),
  • a numeric value.
<Text color>: Integer or constant (optional)
Text color to use. This color corresponds 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.
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.

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 specified in relation to the top left corner of the Image control (coordinates set to (0,0)).
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 dDrawing
    • dStartDrawing must be called before any other drawing function. dStartDrawing is used to define the element (Image control or Image variable) onto 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 QueriesWindows 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.
    New in version 24
    Reports and QueriesWindows 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.
    Reports and QueriesWindows 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.
Reports and Queries

Limitations

In anti-aliasing mode (dChangeMode) or in opacity mode (dStartDrawing), dText is available only for True Type fonts.
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
Component : wd240pnt.dll
Minimum version required
  • Version 9
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