IPB

> OutText (procedure) (Graph unit)
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 OutText (procedure)     (Graph unit)


Sends a string to the output device at the current pointer.

Declaration

 procedure OutText(TextString: string);

Target

Real, Protected

Remarks

Displays TextString at the CP using the current justification settings.

TextString is truncated at the viewport border if it is too long. If one of the stroked fonts is active, TextString is truncated at the screen boundary if it is too long.

If the default (bit-mapped) font is active and the string is too long to fit on the screen, no text is displayed.

OutText uses the font set by SetTextStyle. To maintain code compatibility when using several fonts, use the TextWidth and TextHeight calls to determine the dimensions of the string.

OutText uses the output options set by SetTextJustify (justify, center, rotate 90 degrees, and so on).

The CP is only updated by OutText if the direction is horizontal with left justification. Text output direction is set by SetTextStyle (horizontal or vertical); text justification is set by SetTextJustify (CP at the left of the string, centered around CP, or CP at the right of the string--written above CP, below CP, or centered around CP).

In the following example, block #1 outputs ABCDEF and moves CP (text is both horizontally output and left-justified); block #2 outputs ABC with DEF written right on top of it because text is right-justified; and, block #3 outputs ABC with DEF written right on top of it because text is written vertically.

 program CPupdate;
 uses Graph;
 var Driver, Mode: Integer;
 begin
   Driver := Detect;
   InitGraph(Driver, Mode, '');
   if GraphResult < 0 then
     Halt(1);
   { #1 }
   MoveTo(0, 0);
   SetTextStyle(DefaultFont, HorizDir, 1);   { CharSize = 1 }
   SetTextJustify(LeftText, TopText);
   OutText('ABC');                           { CP is updated }
   OutText('DEF');                           { CP is updated }
   { #2 }
   MoveTo(100, 50);
   SetTextStyle(DefaultFont, HorizDir, 1);   { CharSize = 1 }
   SetTextJustify(RightText, TopText);
   OutText('ABC');                           { CP is updated }
   OutText('DEF');                           { CP is updated }
   { #3 }
   MoveTo(100, 100);
   SetTextStyle(DefaultFont, VertDir, 1);    { CharSize = 1 }
   SetTextJustify(LeftText, TopText);
   OutText('ABC');                           { CP is NOT updated }
   OutText('DEF');                           { CP is NOT updated }
   Readln;
   CloseGraph;
 end.

The CP is never updated by OutTextXY.

The default font (8X8) is not clipped at the screen edge. Instead, if any part of the string would go off the screen, no text is output. For example, the following statements would have no effect:

 SetViewPort(0, 0, GetMaxX, GetMaxY, ClipOn);
 SetTextJustify(LeftText, TopText);
 OutTextXY(-5, 0);  _{ -5,0 not onscreen }
 OutTextXY(GetMaxX - 1, 0, 'ABC'); _{ Part of 'A', }
 _{ All of 'BC' off screen }

The stroked fonts are clipped at the screen edge, however.

Restrictions

Must be in graphics mode.

See Also

Sample Code

 
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Тэги: OutText
 

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