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(Unicode C) Get a String Property Value from XMPDemonstrates how to open a JPG or TIF image file, access the XMP metadata, and fetch the value of a string property, such as the Location.
#include <C_CkXmpW.h> #include <C_CkXmlW.h> void ChilkatSample(void) { HCkXmpW xmp; BOOL success; HCkXmlW xml; const wchar_t *propVal; // This requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. xmp = CkXmpW_Create(); // Load a JPG or TIF image file. // Sample JPG's with XMP metadata may be found at: // http://www.chilkatsoft.com/testData/xmp/sample1.jpg // http://www.chilkatsoft.com/testData/xmp/sample2.jpg // http://www.chilkatsoft.com/testData/xmp/sample3.jpg success = CkXmpW_LoadAppFile(xmp,L"sample1.jpg"); if (success != TRUE) { wprintf(L"%s\n",CkXmpW_lastErrorText(xmp)); CkXmpW_Dispose(xmp); return; } wprintf(L"Num embedded XMP docs: %d\n",CkXmpW_getNumEmbedded(xmp)); // Assuming there is at least one, get the 1st. // (There is typically never more than one, but theoretically it's possible.) xml = CkXmpW_GetEmbedded(xmp,0); if (CkXmpW_getLastMethodSuccess(xmp) == TRUE) { propVal = CkXmpW_getSimpleStr(xmp,xml,L"Iptc4xmpCore:Location"); if (CkXmpW_getLastMethodSuccess(xmp) != TRUE) { wprintf(L"Not found.\n"); } else { wprintf(L"%s\n",propVal); } CkXmlW_Dispose(xml); } else { wprintf(L"%s\n",CkXmpW_lastErrorText(xmp)); } CkXmpW_Dispose(xmp); } |
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