pdfium 例子

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#include <stdio.h>   #include <fpdfview.h>   int main(int argc, char** argv) {   FPDF_InitLibrary();   FPDF_DOCUMENT doc;   FPDF_PAGE page;   doc = FPDF_LoadDocument("foxit_sdk.pdf", NULL);   if (doc == NULL) {     printf("failed to open test document\n");     return 1;   }   int numPages = FPDF_GetPageCount(doc);   printf("document has %d pages\n", numPages);   for (int i = 0; i < numPages; ++i) {     page = FPDF_LoadPage(doc, i);     if (page == NULL) {       printf("failed to open page %s\n", i);       continue;;     }     double width = FPDF_GetPageWidth(page);     double height = FPDF_GetPageHeight(page);     printf("page %d is : %f x %f\n", i, width, height);   }   FPDF_DestroyLibrary();   return 0; }

　　https://github.com/cgilling/build-pdfium/blob/67e5e6eadaf474283ff8e6f47b9454330bf61a76/pdfium_test/main.cc