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Crt

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CRT is a unit providing subroutines for programming in text mode. It is similar to ncurses C library. It's intention is to be compatible with the Borland Pascal / Turbo Pascal 7 CRT unit.

Procedures and Functions

Keyboard:

pascal
Function KeyPressed: Boolean;          
Function ReadKey: Char;

Display:

pascal
Procedure TextMode (Mode: word);        
Procedure Window(X1,Y1,X2,Y2: Byte);    
Procedure Window32(X1,Y1,X2,Y2: DWord); 
Procedure ClrScr;                       
Procedure ClrEol;                       
Procedure InsLine;                      
Procedure DelLine;                      
Procedure TextColor(Color: Byte);       
Procedure TextBackground(Color: Byte);  
Procedure LowVideo;                     
Procedure HighVideo;                    
Procedure NormVideo;

Cursor Control:

pascal
Procedure cursoron;                     
Procedure cursoroff;                    
Procedure cursorbig;                    
Procedure GotoXY(X,Y: tcrtcoord);       
Procedure GotoXY32(X,Y: DWord);         
Function WhereX: tcrtcoord;            
Function WhereY: tcrtcoord;            
Function WhereX32: DWord;              
Function WhereY32: DWord;

Sound:

pascal
Procedure Sound(Hz: Word);              
Procedure NoSound;

Delay: (Typically used with sound)

pascal
Procedure Delay(MS: Word);

===File:===

pascal
Procedure AssignCrt(var F: Text);

Variables and Constants

Color Constants:

pascal
const
  Black        =   0;
  Blue         =   1;
  Green        =   2;
  Cyan         =   3;
  Red          =   4;
  Magenta      =   5;
  Brown        =   6;
  LightGray    =   7;
  DarkGray     =   8;
  LightBlue    =   9;
  LightGreen   =  10;
  LightCyan    =  11;
  LightRed     =  12;
  LightMagenta =  13;
  Yellow       =  14;
  White        =  15;
  Blink        = 128;

From the Free Pascal wiki, page "Crt", as it stood on 2019-12-27 after a change by Trev, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's Licensing page. If you have concerns about this material, message the admin.

Revision 5, last changed by WikiArchive .