Your "sub open_file" declares a LOCAL lexical my $select_input_file.

Your "push_button" gets a different (uninitialized) variable with the same name.

Lesson : always use strict;

     "As you get older three things happen. The first is your memory goes, and I can't remember the other two... " - Sir Norman Wisdom

In reply to Re^2: Tcl::Tk getOpenFile Not Working - Missing File Operand by NetWallah
in thread Tcl::Tk getOpenFile Not Working - Missing File Operand by phillc

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