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   Collapse AllThis method gets the height (in pixels) of the specified string.
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| DOUBLE PDFPAGE_GetTextHeight ( BSTR text ) |
Parameters
text
Text string to be measured
Return value
Calculated text height
Remarks
This method returns the height (in pixels) of the specified ANSI text string for the current font and page properties. Use PDFPAGE_SetActiveFont to set a desired font before calling this method.
Equivalent in new interface: IPDFDocument4::GetTextHeight.
Example
How to Get the Text Height When Printing Centered Text
Delphi
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{ PDF object is supposed to be created }
PDF.BeginDoc;
PDF.PDFPAGE_SetActiveFont('Verdana', false, false, false, false, 16.0, 0);
txt := 'Centered text.';
h := PDF.PDFPAGE_GetTextHeight(txt);
w := PDF.PDFPAGE_GetTextWidth(txt);
l := (PDF.PageWidth - w) / 2;
t := (PDF.PageHeight - h) / 2;
PDF.PDFPAGE_TextOut(l, t, 0.0, txt);
PDF.EndDoc;
C/C++
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// PDF object is supposed to be created
PDF->BeginDoc();
PDF->PDFPAGE_SetActiveFont("Verdana", FALSE, FALSE, FALSE, FALSE, 16.0, 0);
CHAR* txt = "Centered text.";
DOUBLE h = PDF->PDFPAGE_GetTextHeight(txt);
DOUBLE w = PDF->PDFPAGE_GetTextWidth(txt);
DOUBLE l = (PDF->PageWidth - w) / 2.0;
DOUBLE t = (PDF->PageHeight - h) / 2.0;
PDF->PDFPAGE_TextOut(l, t, 0.0, txt);
PDF->EndDoc();
C#
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// PDF object is supposed to be created
PDF.BeginDoc();
PDF.PDFPAGE_SetActiveFont("Verdana", false, false, false, false, 16.0, 0);
string txt = "Centered text.";
double h = PDF.PDFPAGE_GetTextHeight(txt);
double w = PDF.PDFPAGE_GetTextWidth(txt);
double l = (PDF.PageWidth - w) / 2.0;
double t = (PDF.PageHeight - h) / 2.0;
PDF.PDFPAGE_TextOut(l, t, 0.0, txt);
PDF.EndDoc();
Visual Basic
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' PDF object is supposed to be created PDF.BeginDoc PDF.PDFPAGE_SetActiveFont "Verdana", False, False, False, False, 16.0, 0 txt = "Centered text." h = PDF.PDFPAGE_GetTextHeight(txt) w = PDF.PDFPAGE_GetTextWidth(txt) l = (PDF.PageWidth - w) / 2 t = (PDF.PageHeight - h) /2 PDF.PDFPAGE_TextOut l, t, 0.0, txt PDF.EndDoc
See Also