Winlinerel - Texas Instruments TI-89 Developer's Manual

Appendix A: System Routines — Windows

WinLineRel

Declaration: void WinLineRel (WINDOW * w , WIN_COORDS x0 , WIN_COORDS y0 )
Category(ies): Windows
Description: Draw a line from the current pen position using relative coordinates, then
update the pen position to those coordinates. The current pen position can
be initialized with WinMoveTo.
Inputs: w
x0, y0 — End-point of line to draw.
Outputs: None
Assumptions: The valid line attributes are: A_NORMAL (set), A_REVERSE (clear),
A_XOR and A_THICK1 (double thick line).
Side Effects: None
Availability: All versions of the TI-89 / TI-92 Plus.
TI-89 / TI-92 Plus
Differences: None
See Also: WinAttr, WinLine, WinLineTo, WinMoveTo
Example:
/* Draw a rectangle (could use WinRect to do the same thing) */
WinMoveTo( &appW, 10, 10 );
WinLineRel( &appW, 90, 0 );
WinLineRel( &appW, 0, 50 );
WinLineRel( &appW, -90,0 );
WinLineRel( &appW, 0, -50 );
TI-89 / TI-92 Plus Developer Guide
— WINDOW struct of a previously opened window.
Not for Distribution
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Beta Version January 26, 2001