Winchar - Texas Instruments TI-89 Developer's Manual

Appendix A: System Routines — Windows

WinChar

Declaration: void WinChar (WINDOW * w , char c )
Category(ies): Windows
Description: Write a character to a window at the current pen position (pixel based)
using the current attribute (set with WinAttr) and current font (WinFont). If
the window is in WF_TTY mode the current X, Y location is updated; and
newline ('\r' or '\n') and form feed ('\f') characters are handled.
Inputs: w — WINDOW struct of a previously opened window.
c — Character to draw to window.
Outputs: None
Assumptions: The default attribute (A_NORMAL) can be changed with WinAttr; the
default font (F_6x8) can be changed with WinFont; the current window
position is set with WinMoveTo or WinMoveRel.
The supported values for character attributes are: A_NORMAL,
A_REVERSE, A_XOR, A_SHADED, A_REPLACE. See WinAttr for a
detailed description of the character attributes.
Side Effects: None
Availability: All versions of the TI-89 / TI-92 Plus.
TI-89 / TI-92 Plus
Differences: None
See Also: WinAttr, WinFont, WinOpen, WinCharXY, WinMoveTo, WinMoveRel,
WinStr, WinStrXY
Example:
WINDOW wTTY;
if (WinOpen( &wTTY, MakeWinRect(10,10,90,90), WF_TTY)) {
WinActivate( &wTTY );
WinChar( &wTTY, '\f' );
WinFont( &wTTY, F_8x10 );
WinChar( &wTTY, LF_LE );
WinAttr( &wTTY, A_REVERSE );
WinChar( &wTTY, '\n' );
WinChar( &wTTY, '2' );
WinMoveTo( &wTTY, 20, 20 );
WinAttr( &wTTY, A_REPLACE );
WinChar( &wTTY, 'X' );
ngetchx();
WinMoveRel( &wTTY, -8, 0 );
WinAttr( &wTTY, A_XOR );
WinChar( &wTTY, 'X');
ngetchx();
WinClose( &wTTY );
}
TI-89 / TI-92 Plus Developer Guide
/* same as WinClr( &wTTY ); */
/* newline */
/* move to specific location */
/* backup one char */
/* XOR mode */
/* wipe out previous char */
Not for Distribution
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Beta Version January 26, 2001