HBITMAP\u662f Windows GDI\uff08\u56fe\u5f62\u8bbe\u5907\u63a5\u53e3\uff09\u4e2d\u7684\u4f4d\u56fe\u53e5\u67c4\uff08Handle to a Bitmap\uff09\uff0c\u5728\u4f7f\u7528C++\u7248\u672cFoxit PDF SDK\u5f00\u53d1PDF\u663e\u793a\u9884\u89c8\u7684\u56fe\u5f62\u754c\u9762\u65f6\uff0c\u7ecf\u5e38\u4f1a\u7528\u5230\u3002<\/p>\n\n\n\n
\u4ee5\u4e0b\u662f\u798f\u6615SDK\u7684 C++ \u7248\u672c\u7684Bitmap\u7c7b\u578b\uff0c\u8f6c\u6210HBITMAP\u7684\u793a\u4f8b\u4ee3\u7801<\/p>\n\n\n\n
#include <windows.h>\n#include <stdexcept>\n#include <cstdint>\n#include <algorithm> \n\nHBITMAP BitmapToHBITMAP( Bitmap& bitmap) {\n\n if (bitmap.GetWidth() <= 0 || bitmap.GetHeight() <= 0) {\n throw std::invalid_argument(\"Invalid bitmap width or height\");\n }\n int bpp = bitmap.GetBpp();\n int bmp_w = bitmap.GetWidth();\n int bmp_h = bitmap.GetHeight();\n if (bpp != 8 && bpp != 24 && bpp != 32) {\n throw std::invalid_argument(\"Unsupported BPP: only 8, 24, 32 are allowed\");\n }\n\n const uint8_t* bmpBuffer = bitmap.GetBuffer();\n if (!bmpBuffer) {\n throw std::runtime_error(\"Bitmap buffer is null\");\n }\n\n BITMAPINFO bmi;\n FillBitmapInfo(bmi, bmp_w, bmp_h, bpp);\n\n \/\/ \u83b7\u53d6\u6bcf\u4e2a\u50cf\u7d20\u7684\u901a\u9053\u6570\n int channels = 0;\n if (bpp == 8) {\n channels = 1;\n }\n else if (bpp == 24) {\n channels = 3;\n }\n else if (bpp == 32) {\n channels = 4;\n }\n int rowValidBytes = bmp_w * channels; \n\n BYTE* pDibBits = nullptr;\n HBITMAP hBitmap = CreateDIBSection(\n nullptr, \n &bmi, \n DIB_RGB_COLORS, \n reinterpret_cast<void**>(&pDibBits), \n nullptr, \n 0 \n );\n\n if (!hBitmap || !pDibBits) {\n throw std::runtime_error(\"Failed to create DIBSection\");\n }\n\n const BYTE* pSrc = reinterpret_cast<const BYTE*>(bmpBuffer);\n for (int row = 0; row < bmp_h; row++) {\n pSrc = reinterpret_cast<const BYTE*>(bmpBuffer) + row * bitmap.GetPitch();\n BYTE* pDst = &pDibBits[row * rowValidBytes];\n\n \/\/ \u590d\u5236\u6709\u6548\u50cf\u7d20\u6570\u636e\n memcpy(pDst, pSrc, rowValidBytes);\n if (bpp == 24) {\n for (int col = 0; col < bmp_w; col++) {\n std::swap(pDst[col * 3 + 0], pDst[col * 3 + 2]);\n }\n }\n else if (bpp == 32) {\n for (int col = 0; col < bmp_w; col++) {\n std::swap(pDst[col * 4 + 0], pDst[col * 4 + 2]);\n }\n }\n }\nreturn hBitmap;\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"HBITMAP\u662f Windows GDI\uff08\u56fe\u5f62\u8bbe\u5907\u63a5\u53e3\uff09\u4e2d\u7684\u4f4d\u56fe\u53e5\u67c4\uff08Handle to a Bitmap\uff09\uff0c […]<\/p>\n","protected":false},"author":31,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[77],"tags":[425,1241],"class_list":["post-7500","post","type-post","status-publish","format-standard","hentry","category-gsdk","tag-bitmap","tag-hbitmap"],"pp_statuses_selecting_workflow":false,"pp_workflow_action":"current","pp_status_selection":"publish","_links":{"self":[{"href":"https:\/\/support.fuxinsoft.cn\/index.php?rest_route=\/wp\/v2\/posts\/7500","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/support.fuxinsoft.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/support.fuxinsoft.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/support.fuxinsoft.cn\/index.php?rest_route=\/wp\/v2\/users\/31"}],"replies":[{"embeddable":true,"href":"https:\/\/support.fuxinsoft.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7500"}],"version-history":[{"count":1,"href":"https:\/\/support.fuxinsoft.cn\/index.php?rest_route=\/wp\/v2\/posts\/7500\/revisions"}],"predecessor-version":[{"id":7501,"href":"https:\/\/support.fuxinsoft.cn\/index.php?rest_route=\/wp\/v2\/posts\/7500\/revisions\/7501"}],"wp:attachment":[{"href":"https:\/\/support.fuxinsoft.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7500"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/support.fuxinsoft.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7500"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/support.fuxinsoft.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7500"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}