}An alternative to using a hbitmap (assuming you don't want it for anything else) is to use the LockBits method of the Bitmap class and look through those rather than making an extra copy. Std::wstring wideFile = ConvertToWString(file) Ĭolor background // colour to make any transparent sections - defaults to blackīitmap bm(wideFile.c_str()) // create a bitmap object for the fileīm.GetHBITMAP(background, &hBM) // grab the image as a hbitmap HBITMAP GetHBitmapFromFile(const std::string& file) Return std::wstring(wideBuffer.begin(), wideBuffer.end()) Įlse throw std::invalid_argument(std::string("Cannot convert ") + narrowString) Mbstowcs(&wideBuffer, file.c_str(), file.length())
Size_t sizeRequired = mbstowcs(NULL, file.c_str(), file.length()) Std::wstring ConvertToWString(const std::string& narrowString) wrapper around GDI+ startup and shutdown
Stretchblt copyimage free#
* wrap up decompression, destroy objects, free pointers and close open files */ Jpeg_read_scanlines( &cinfo, row_pointer, 1 ) įor( i=0 i * here we set up the standard libjpeg error handler */ * libjpeg data structure for storing one row, that is, scanline of an image */ * these are standard libjpeg structures for reading(decompression) */ Is their another way to check the data at a pixel without converting a jpg into an HBITMAP? Maybe some incredibly magical libraries? I have no idea why and googling hasn't revealed any answers. }stream->Release() causes an access violation. HBITMAP hBB = (HBITMAP)CopyImage(hB,IMAGE_BITMAP,0,0,LR_COPYRETURNORG) MessageBox(NULL,"Load Image 7", "", NULL) MessageBox(NULL,"Load Image 6", "", NULL) MessageBox(NULL,"Load Image 5", "", NULL) Stream->Release() //access violation here? MessageBox(NULL,"Load Image 4", "", NULL) OleLoadPicture(stream,0,false,IID_IPicture,(void**)&pic) MessageBox(NULL,"Load Image 3", "", NULL) MessageBox(NULL,"Load Image 1", "", NULL) May have something to do with how I'm passing jpgData*/ * TODO (#1#): Fix access violaion in code below. InternetReadFile(hFile, buffer, bytesToRead, &bytesRead) Ĭode: HBITMAP Internet::loadImage(BYTE* jpgData) HFile = InternetOpenUrl(hInternet, gal.c_str(), NULL, 0, 0, 0) īool succeeds = HttpQueryInfo(hFile, HTTP_QUERY_CONTENT_LENGTH | HTTP_QUERY_FLAG_NUMBER, (LPVOID)&sizeBuffer, &length, NULL) Std::string temp = gal + ".overview.jpg" HInternet = InternetOpen( "GINA: Version 0.1", INTERNET_OPEN_TYPE_DIRECT, NULL, 0,0) Code: HBITMAP Internet::getFromInternet(std::string gal)
Stretchblt copyimage code#
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