This content has been translated automatically.  Click here  to view the French version.
Help / WLanguage / WLanguage functions / Standard functions / Windows functions / MCI functions
WindowsLinuxUniversal Windows 10 AppJavaReports and QueriesUser code (UMC)
WindowsLinuxPHPWEBDEV - Browser code
AndroidAndroid Widget iPhone/iPadIOS WidgetApple WatchMac CatalystUniversal Windows 10 App
Stored procedures
MCISize (Function)
In french: MCITaille
Returns or changes the size of a media file (previously opened with MCIOpen). The unit used is the one specified by MCIPositionFormat.
MCIOpen("Sound.wav", "MySound")
MCIPositionFormat("MySound", MciFormatMS)
Res_Size = MCISize("MySound")
<Result> = MCISize(<Media file or alias> [, <Parameters> [, <Name of the message window>]])
<Result>: Character string
  • Size of the file expressed in the format specified by MCIPositionFormat.
  • Empty string if an error occurred. To get the error number, use MCIErr. To get more details on the error, use MCIMsgErr or ErrorInfo with the errMessage constant.
    The status report of the command is returned by MCIRetrieve.
<Media file or alias>: Character string
Name of the media file to be used (AVI, MP3, etc.) or alias defined when opening the file (MCIOpen).
<Parameters>: Optional character string
Additional parameters if necessary. These parameters can be known by checking the documentation of the Windows MCI function named "status".
The MciWait constant can be added to this string. This constant is used to indicate that the program must wait for the end of the MCI command to run the rest of application.
<Name of the message window>: Optional character string
Name of the window used to intercept and manage the different messages sent by MMSYSTEM.DLL. These messages are in MM_xxxxxx format and can be retrieved with Event. You can for example get messages regarding the management of the CD ROM or Joystick.
Component: wd290std.dll
See also
Minimum version required
  • Version 9
This page is also available for…
Click [Add] to post a comment

Last update: 06/02/2022

Send a report | Local help