Scalabium Software

SMReport Autogenerated
Knowledge for your independence'.
Home Delphi and C++Builder tips

#61: How can I read the vertical refresh rate of the display?

If you need retrieve the value of the vertical refresh rate of the your monitor, you can call the GetDeviceCaps API's function with VREFRESH parameter.

This feature are available on Windows NT platform only, so before using you must check the Windows version. For example,

var ov: TOSVersionInfo;
     vr: Integer;
  ov.dwOSVersionInfoSize := SizeOf(ov);
  if OV.dwPlatformID = VER_PLATFORM_WIN32_NT then
    vr := GetDeviceCaps(Form1.Canvas.Handle, VREFRESH);
    Label.Caption := 'Frequence: ' + IntToStr(vr) + ' Hz';

Published: January 19, 2000

See also
Clarion Viewer
Mail parser (ActiveX)
ABA Spreadsheet Convert
SMExport suite
Metafile Convert
DBExport tools
Paradox to MS Access converter
SMMsg suite
Viewer for TNEF-files (winmail.dat)
ExcelFile Viewer

Contact to webmaster


Borland Software Code Gear Scalabium Delphi tips

Copyright© 1998-2024, Scalabium Software. All rights reserved.

SMExport advertising