Unit 'agraphics'	Package
[Overview][Constants][Types][Procedures and functions][Variables][Index]	[#os4units]

TextExtent

Determine raster extent of text data.

Declaration

Source position: agraphics.pas line 2408

procedure TextExtent(

const String_: PChar;

Count: LongWord;

TextExtent: PTextExtent

);

`Rp`		A pointer to the RastPort which describes where the text attributes reside.
`String_`		The address of the string to determine the length of.
`Count`		the number of characters in the string. If 0, there are no characters in the string.

This function determines a more complete metric of the space that a text string would render into than the TextLength() function.

TextExtent_ is filled in as follows:

te_Width: same as TextLength() result: the RastPort current x position advance that rendering this text would cause.
te_Height: same as tf_YSize. The height of the font.
te_Extent.MinX: the offset to the left side of the rectangle this would render into. Often zero.
te_Extent.MinY: same as -tf_Baseline. The offset from the baseline to the top of the rectangle this would render into.
te_Extent.MaxX: the offset of the left side of the rectangle this would render into. Often the same as te_Width - 1.
te_Extent.MaxY: same as tf_YSize - tf_Baseline - 1. The offset from the baseline to the bottom of the rectangle this would render into.

TextLength		Determine raster length of text data.
GfxText		Write text characters (no formatting).
TextFit		Count characters that will fit in a given extent