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MciQuerySysValue: Revision history

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5 November 2025

4 November 2025

  • curprev 00:0700:07, 4 November 2025 Martini talk contribs 2,224 bytes +2,224 Created page with "This function queries the value of system-defined attributes. ==Syntax== mciQuerySysValue(iSysValue, pValue) ==Parameters== ; ''iSysValue'' (USHORT) - input :Specifies the system attribute. The possible system attributes are: :;MSV_CLOSEDCAPTION ::Returns TRUE if the user has enabled closed captioning and FALSE otherwise. :;MSV_MASTERVOLUME ::The master volume setting. The range is 0 to 100. :;MSV_HEADPHONES ::Returns TRUE if the user has headphones..."
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