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I have used the following line in an NSIS script:

nsDialogs::SelectFileDialog open "C:\temp.rar" "*.rar"

When I run the resultant installer (in Windows 10) the file dialog opens to C: as it should, temp.rar shows in the File name field, and *.rar shows in the filter dropdown. However the filter is not being applied to the file list. That is, all filetypes are still visible, despite *.rar being the only entry in the filter dropdown.

Does anyone have any idea what might be causing this or how to fix it?

Robert Spanell
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1 Answers1

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The documentation is unfortunately not clear on this but it uses the same format as the GetOpenFileName function in Windows; the filter is a list of pairs; display string and DOS filter:

nsDialogs::SelectFileDialog open "C:\temp.rar" "*.rar|*.rar"
Pop $0
nsDialogs::SelectFileDialog open "C:\temp.rar" ".rar files|*.rar|All Files|*.*"
Pop $0

Keep in mind that the filter is only there to help the user but the user can type in any file name they want even if it does not match the active filter.

Anders
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  • I will try to fix the documentation. – Anders Apr 22 '20 at 21:05
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    This worked great, thank you. I wasn't realizing that a pair is required. Once I changed "\*.rar" to "\*.rar|*.rar" it worked perfectly. This helped me to realize that I could use "Archives (.rar)|*.rar" to make it even prettier. – Robert Spanell Apr 22 '20 at 23:32