file-extension

I found the below code in Finding image type from NSData or UIImage which helps to check four different image types of a UIimage (NSString *)contentTypeForImageData:(NSData *)data { uint8_t c; [data getBytes:&c length:1]; switch (c) { case 0xFF: return @"image/jpeg"; case 0x89: return @"image/png"; case 0x47: return @"image/gif"; case 0x49: case 0x4D: return @"image/tiff"; } return nil; } I want to know how to find the file is a bitmap image or not that it has .bmp extension. can someone please help me with it. Either modify the above code to find bmp as well or please provide me a solution

There are several places that talk about how to get an icon from a file extension such as this one and this other one. After several hours of playing around with this kind of projects I have managed to build something like: private void addButton_Click(object sender, System.EventArgs e) { System.Drawing.Icon temp = IconReader.GetFileIcon(".cs", IconReader.IconSize.Large, false); pictureBox1.Image = temp.ToBitmap(); } the execution of that button gets me: but I am trying to actually get the large icon. Note how the icons on windows are much bigger: How could I get that icon instead of the

If I create a new app, and associate with, say, the .xml file extension on a particular computer, when someone double clicks the .xml file, it will launch my app and pass the file as parameter. But Windows seems to know what other files have the ability to work with that file type. How is that set up? Also, when I save a Microsoft Word file as an .xml file, then later double-click on the file, it will launch Microsoft Word, even though the .xml file type is associated with something else, such as Internet Explorer. Seems like there may be a stub associated with .xml file type which when

I'm developing a simple launchdaemon that copies files from one directory to another. I've gotten the files to transfer over fine. I just want the files in the directory to be .mp3's instead of .dat's Some of the files look like this: 6546785.8786.dat 3678685.9834.dat 4658679.4375.dat I want them to look like this: 6546785.8786.mp3 3678685.9834.mp3 4658679.4375.mp3 This is what I have at the end of the bash script to rename the file extensions. cd $mp3_dir mv *.dat *.mp3 exit 0 Problem is the file comes out as *.mp3 instead of 6546785.8786.mp3 and when another 6546785.8786.dat file is imported

When I save a .m file in a folder, MATLAB autosaves a .asv file in the same folder. I opened this file and I found that it contains my code from the beginning, ignoring what I have deleted. What is the use of this file? What's the risk if I delete that file? A .asv file is just what you said, an "AutoSave" file. It's just there so that you don't lose all your code if your computer crashes/shutdown. You can delete it whenever you want. If you find them annoying you can go to File/Preferences/-->"Editor/Debugger" --> Autosave and turn it off. 来源： https://stackoverflow.com/questions/9540335/asv

Closed. This question is off-topic. It is not currently accepting answers. Learn more . Want to improve this question? Update the question so it's on-topic for Stack Overflow. I recently came across this image which seems like a normal GIF: Even imgur stores it as a GIF when I uploaded it here. But when I saw the link, it was a JPEG image, unlike a GIF than what I had expected! Here's the link: https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash3/559307_325955130827518_630404691_n.jpg Erty Seidohl This is actually a .gif - look at the headers of the HTTP response. The MIME type is image/gif So