# 84PCSE:BCALLs:4D74

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Revision as of 10:09, 20 October 2013 by FloppusMaximus (Talk | contribs)

## Synopsis

**Hypothesized Official Name:** DrawRectBorderClear

**BCALL Address:** 4D74h

Draw a rectangular outline 1 pixel wide, and fill the interior of the rectangle with white.

### Inputs

- HL = X coordinate of left edge
- DE = X coordinate of right edge (must be greater than HL and at most 319)
- B = Y coordinate of top edge (from top of screen)
- C = Y coordinate of bottom edge (must be greater than B and at most 239)
- (penFGColor) = RGB color of outline

### Outputs

- (fillRectColor) = 0FFFFh

### 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). The outer dimensions of the border are (HL-DE+1) × (C-B+1).