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Function RTDisplaySet

Function RTDisplaySet can be used to define a few display properties:

int RTDisplaySet(int Col, int Row, int Cols, int Rows, WORD Blank);

Parameters

Col

Column of the upper left hand corner of the rectangle to use as a display. In text mode, this value must be 0. In graphics mode, it may have any value such that Col+Cols is <= the width of the whole display. If -1 is specified in graphics mode, the function will select a value such that the used display area in centered on the screen. The default is 0.

Row

Row of the upper left hand corner of the rectangle to use as a display. In text mode, this value must be 0. In graphics mode, it may have any value such that Row+Rows is <= the hight of the whole display. If -1 is specified in graphics mode, the function will select a value such that the used display area in centered on the screen. The default is 0.

Cols

Number of columns to use. In text mode, this value must span the whole width of the screen. In graphics mode, any value <= the width of the whole screen is supported. The default is 80.

Rows

Number of rows to use. In text mode, this value must span the whole hight of the screen. In graphics mode, any value <= the hight of the whole screen is supported. The default is 25.

Blank

The lower 8 bits are ignored. The upper 8 bits define the colors to use for characters with no attribute bits set. For details, please see function RTDisplayCharAt. This parameter is ignored if 0.

Function RTDisplayClear

Function RTDisplayGotoXY