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Problems to create a Thumbnailimage from a WORD document in Objective c
UIWebView *myWebView22 = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];

path44 = [caminoINICIAL stringByAppendingPathComponent:@"documentoInicial.doc"];

NSURL *fileURL22 = [[NSURL alloc] initFileURLWithPath:path44];

NSURLRequest *req22 = [NSURLRequest requestWithURL:fileURL22];

[myWebView22 setScalesPageToFit:YES];

[myWebView22 loadRequest:req22];


UIGraphicsBeginImageContext(myWebView22.bounds.size);

CGContextRef c = UIGraphicsGetCurrentContext();

CGContextTranslateCTM(c, 0, 0);

[myWebView22.layer renderInContext:c];

UIImage* viewImage = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

pngPath = [caminoINICIAL stringByAppendingPathComponent:[NSString stringWithFormat:@"imagenFinal.png"]];

[UIImagePNGRepresentation(viewImage) writeToFile:pngPath atomically:YES];