<HTML> <HEAD> <TITLE>cgSetErrorHandler</TITLE> <STYLE TYPE="text/css" MEDIA=screen> <!-- BODY { font-family: Arial,Helvetica; } BLOCKQUOTE { margin: 10pt; } H1,A { color: #336699; } /*** Top menu style ****/ .mmenuon { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #ff6600; font-size: 10pt; } .mmenuoff { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #ffffff; font-size: 10pt; } .cpyright { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #ffffff; font-size: xx-small; } .cpyrightText { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #ffffff; font-size: xx-small; } .sections { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #336699; font-size: 11pt; } .dsections { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #336699; font-size: 12pt; } .slink { font-family: Arial,Helvetica; font-weight: normal; text-decoration: none; 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void cgSetErrorHandler( CGerrorHandlerFunc func, void * appdata ); </PRE> <H1><A NAME="PARAMETERS"><A NAME="3">PARAMETERS </A></A></H1> <DL> <DT><STRONG>func </STRONG></DT> <DD> <P> A pointer to the error handler callback function. </P> <DT><STRONG>appdata </STRONG></DT> <DD> <P> A pointer to arbitrary application-provided data. </P> </DD></DL> <H1><A NAME="RETURN_VALUES"><A NAME="4">RETURN VALUES </A></A></H1> <P> None. </P> <H1><A NAME="DESCRIPTION"><A NAME="5">DESCRIPTION </A></A></H1> <P> <B>cgSetErrorHandler</B> specifies an error handler function that will be called every time a Cg runtime error occurrs. The callback function is passed: </P> <DL> <DT><STRONG><B>context</B> </STRONG></DT> <DD> <P> The context in which the error occured. If the context cannot be determined, <B>NULL</B> is used. </P> <DT><STRONG><B>error</B> </STRONG></DT> <DD> <P> The enumerant of the error triggering the callback. </P> <DT><STRONG><B>appdata</B> </STRONG></DT> <DD> <P> The value of the pointer passed to <B>cgSetErrorHandler</B>. This pointer can be used to make arbitrary application-side information available to the error handler. </P> </DD></DL> <P> To disable the callback function, specify a <B>NULL</B> callback function pointer via <B>cgSetErrorHandler</B>. </P> <H1><A NAME="EXAMPLES"><A NAME="6">EXAMPLES </A></A></H1> <PRE> void MyErrorHandler(CGcontext context, CGerror error, void *data) { char *progname = (char *)data; fprintf(stderr, "%s: Error: %s\n", progname, cgGetErrorString(error)); } void main(int argc, char *argv[]) { ... cgSetErrorHandler(MyErrorHandler, (void *)argv[0]); ... } </PRE> <H1><A NAME="ERRORS"><A NAME="7">ERRORS </A></A></H1> <P> <I>to-be-written</I> </P> <H1><A NAME="HISTORY"><A NAME="8">HISTORY </A></A></H1> <P> <B>cgSetErrorHandler</B> was introduced in Cg 1.4. </P> <H1><A NAME="SEE_ALSO"><A NAME="9">SEE ALSO </A></A></H1> <P> <A HREF="cgGetErrorHandler.html">cgGetErrorHandler</A>, <A HREF="cgGetError.html">cgGetError</A>, <A HREF="cgGetErrorString.html">cgGetErrorString</A>, <A HREF="cgGetFirstError.html">cgGetFirstError</A> </P> </BLOCKQUOTE> </BODY>