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Error Messages

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Display error messages.

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These functions are used to display error messages. The output will take place in 
an error dialog and on stderr.


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<!-- ##### FUNCTION gpe_error_box ##### -->
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Create and show normal, blocking error dialog.
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@text: Error message


<!-- ##### FUNCTION gpe_error_box_nonblocking ##### -->
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Create and show a non-blocking error message.
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@text: Error message


<!-- ##### FUNCTION gpe_perror_box ##### -->
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Shows an error message with perror style information.
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@text: Error message


<!-- ##### FUNCTION gpe_perror_box_nonblocking ##### -->
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Shows an error message with perror style information, non-blocking version.
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@text: Error message


<!-- ##### FUNCTION gpe_error_box_fmt ##### -->
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Show an formated error message using a printf style argument list.
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@format: Message format string
@Varargs: Argument list


