get icon from filename

[Wiky]

There are several files to download.

And before downloading, I want to show the user what files to be downloaded, 
with their icons.

So I have a filename such as 'hello.mkv' which not exists but to be downloaded.
How can I get an icon GdkPixbuf from the filename 'hello.mkv'


I tried
GIcon *icon=g_file_icon_new (hello.mkv)
GtkIconInfo *info=gtk_icon_theme_lookup_by_gicon(...)   
GdkPixbuf *pixbuf=gtk_icon_info_load_icon(...)
but failed with error message 'Error opening file: No such file or directory'



Sorry for my English


--

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Wiky L
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.goutputstream-*?

[Wiky]

 Hello,I'm writing a program, which download file from web and save it.
I use GFileOutputStream to save the data.

 httper-fOutput = g_file_replace(file, NULL, FALSE, G_FILE_CREATE_NONE,
 NULL, NULL);
...
 g_output_stream_write(G_OUTPUT_STREAM(httper-fOutput),
  ptr, len, 0, NULL);

And now I find a series of files named .goutputstream-* in the directory.
What are they used for? and how to avoid creating them?

Sorry for my English
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How ot remove the minimize and maximize button of GtkWindow

[Wiky]

 The default GtkWindow has a minimize , a maximize and a close button in the 
right or left top coner.
But I want a window which only has a close button. How can I remove the 
minimize and maximize button?
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Disable GtkEntry Context Menu

[Wiky]

 hi all,
I create a GtkEntry but it has a context menu by default. How can I disable it.
in Gtk+-3.6
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