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XpmMisc(3) libXpm functions XpmMisc(3) NAME XpmMisc - xpm misc functions to free used memory and handle errors SYNOPSIS int XpmFreeXpmImage(XpmImage *image); int XpmFreeXpmInfo(XpmInfo *info); int XpmFreeAttributes(XpmAttributes *attributes); int XpmAttributesSize(void); int XpmFreeExtensions(XpmExtension *extensions, int nextensions); int XpmFree(char *ptr); char *XpmGetErrorString(int errorcode); int XpmLibraryVersion(void); ARGUMENTS image Specifies the structure to free info Specifies the structure to free ptr Specifies the data to free errorcode Specifies the XPM error extensions Specifies the array to free nextensions Specifies the number of extensions attributes Specifies the structure to free DESCRIPTION To free possible data stored into an XpmImage structure use XpmFreeXp- mImage(). The XpmFreeXpmImage() function frees the structure members which are not NULL, but not the structure itself. To free possible data stored into an XpmInfo structure use XpmFreeXp- mInfo(). To free data possibly stored into an array of XpmExtension use XpmFree- Extensions(). To free any data allocated by an XPM function use the XpmFree() func- tion. The current distribution of the XPM library uses the standard memory allocation functions and thus XpmFree() is nothing else than a define to the standard free(3). However since these functions may be redefined in specific environments it is wise to use XpmFree() To free possible data stored into an XpmAttributes structure use Xpm- FreeAttributes(). The XpmFreeAttributes() function frees the structure members which have been malloced such as the pixels list. To dynamically allocate an XpmAttributes structure use the XpmAttrib- utesSize() function. The XpmAttributesSize() function provides appli- cations using dynamic libraries with a safe way to allocate and then refer to an XpmAttributes structure, disregarding whether the XpmAt- tributes structure size has changed or not since compiled. To get data when building an error message, one can use XpmGetEr- rorString(). XpmGetErrorString() returns a string related to the given XPM error code. The XpmLibraryVersion() function can be used when one needs to figure out which version of the library is in use. The value returned by Xpm- LibraryVersion() can be compared to the value of XpmIncludeVersion which is defined in the header file "xpm.h". These numbers are com- puted with the following formula: (XpmFormat * 100 + XpmVersion) * 100 + XpmRevision where XpmFormat is the version number of the format, XpmVersion is the library version number (which changes only if the API changes), and XpmRevision is the library minor version number. The XpmFreeExtensions() function frees all data stored in every exten- sion and the array itself. Note that XpmFreeAttributes() calls this function and thus most of the time it should not need to be explicitly called. SEE ALSO XpmCreateBuffer(3), XpmCreateData(3), XpmCreateImage(3), XpmCreatePixmap(3), XpmCreateXpmImage(3), XpmRead(3), XpmWrite(3) X Version 11 libXpm 3.5.17 XpmMisc(3)
NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | SEE ALSO
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