# 84PCSE:BCALLs:55A2

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Revision as of 20:27, 19 October 2013 by FloppusMaximus (Talk | contribs)

## Synopsis

**Unofficial Name:** DrawThickRectBorder

**BCALL Address:** 55A2h

Draw a rectangular outline 2 pixels wide.

### Inputs

- HL = X coordinate of left edge (must be at least 1)
- DE = X coordinate of right edge (must be greater than HL and at most 318)
- B = Y coordinate of top edge (from top of screen; must be at least 1)
- C = Y coordinate of bottom edge (must be greater than B and at most 238)
- (penFGColor) = RGB color to draw

### Outputs

*None*

### Destroys

- AF, BC, DE, HL
- Interrupts disabled

## Comments

The rectangle is drawn only to the LCD, never to the graph buffer.

The dimensions of the enclosed area are (HL-DE-1) × (C-B-1) (just as for DrawRectBorder.) The outer dimensions of the border are (HL-DE+3) × (C-B+3).