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Error Message Generator 2.0
This is a modern remake of my "Error Message Generator" that was originally written using Perl/Tk around 2006. This one is written in Go in 2023 using the Fyne UI and aims to match and surpass the features of the original Perl version.
The original inspiration for this back in 2006 was an online web tool called "Atom Smasher's Error Message Generator" which generated images of error messages. My Perl ErrorGen program included all of the Atom Smasher icons. Atom Smasher's page seems offline recently, so interest has skyrocketed for my Perl ErrorGen program, so I decided to dust it off, redo it in Go and make it better than ever before.
This program has two operating modes:
- MainWindow mode: by default, it will show the Main Window where you can construct and test a custom error message pop-up.
- Command Line Interface (CLI): If given command-line options, it will just pop up the message box you specified and print the user's selection to its standard output, useful for batch files or shell scripts to ask the user a question.
The current features include:
- Choose from 72 built-in icons that all came from the original Atom Smasher's Error Message Generator.
- Custom title bar and message text.
- Configure up to three buttons (via the MainWindow; unlimited number of buttons by command line) each with custom labels.
- Mark some buttons disabled and not clickable.
- Command line interface to use these error dialogs from scripts and external programs:
- The program returns the selected button text on its standard output.
--cancelvalue can be printed to standard out if the user X's out of the window without selecting a button.
- Specify which button should be the primary/default response of the Return key.
- Specify which button should be the cancel/escape key response.
The roadmap of future features include:
- Improve the command-line interface to bring it up to par with other dialog tools such as Zenity.
- e.g., add File Open/Save Dialogs, Color Picker Dialogs, and others that can be extremely useful to third-party programs.
- The graphical Error Message Generator tool will probably not call these much - the primary GUI for this program is very much a fun toy. :)
- In the MainWindow, add a "Save" button that will turn your custom error dialog into a batch file or shell script that calls the ErrorGen program's command line interface.
- Example: you use the ErrorGen UI to create a prank dialog box and "Save" it as a .bat file on disk.
- Making sure that the .bat and ErrorGen.exe are in the same folder together, double-clicking on the .bat script will show your error dialog without the MainWindow coming up!
- Allow users to select a custom icon image.
- The command-line interface already supports this.
- The MainWindow should allow users to browse and select a custom icon from their computer to use in their toy error boxes.
- Allow users to permanently extend the icon library with a folder of their own customs, so they don't have to browse and select a custom file every single time.
Command Line Interface
You can call this program from batch files or shell scripts to prompt the user with a graphical dialog box and read the button they chose from this program's standard output.
For example, from a bash script:
#!/bin/bash answer=`./errorgen --alert --title "Disk Failure" \ --text "Failure to read from drive Z:/" \ --icon defrag --button Abort --button Retry --button Fail \ --default 1 --cancel Fail` echo "You have chosen: $answer"
The full documentation is included below. Running
errorgen --help from
a text terminal will have the program print its documentation to you, but
this won't work on the Windows version since a program must decide if it's
a graphical or a command line app and can't be both.
These are all the icons that currently come with ErrorGen:
Command Line Usage
The result of
NAME: errorgen - make fun and custom error messages. USAGE: errorgen [global options] command [command options] [arguments...] AUTHOR: Noah Petherbridge, https://www.kirsle.net COMMANDS: help, h Shows a list of commands or help for one command GLOBAL OPTIONS: --version, -v Show program version and build information and exit. (default: false) --error, -e Make the dialog box be of type 'error' by default. An info box has these default attributes unless overridden by other options: Title: Error Text: An error has occurred. Icon: error Buttons: Ok (default: false) --alert, -a Make the dialog box be of type 'alert' by default. An alert box has these default attributes unless overridden by other options: Title: Warning Text: Are you sure you want to proceed? Icon: attention Buttons: Ok (default: false) --info, -i Make the dialog box be of type 'info' by default. An info box has these default attributes unless overridden by other options: Title: Information Text: All updates are complete. Icon: info Buttons: Ok (default: false) --question, -q Make the dialog box be of type 'question' by default. A question box has these default attributes unless overridden by other options: Title: Question Text: Are you sure you want to proceed? Icon: question Buttons: Ok, Cancel (default: false) --title value, -n value Set the title for the dialog box. If no title is set, a default is used based on the type of dialog box requested (which is --info by default; see also --error, --info, --question) --text value, -t value The text displayed inside the dialog box. Use \n where you want line breaks. Important: the text does NOT have automatic word wrapping applied. Insert your own line breaks or else the dialog can be VERY wide for longer messages! --button value, -b value Add a button to the dialog. Use this option as many times as you want to add multiple buttons. The one the user chooses will be printed to standard output. If no buttons, default is an Ok button. (accepts multiple inputs) --default value, -m value Set the default button by its label. The matching --button will be made the default/primary button. --cancel value, -c value Set the 'cancel button'. This value should match one of your --buttons and will be the value 'selected' if the user closes the window or hits the Escape key. --disabled value, -d value, -g value Mark buttons (by index) disabled Specify a --button number (from 0 to n) that should be disabled, or greyed out. The user can not click on this button. (accepts multiple inputs) --icon value, -o value Set the icon to be displayed in the dialog box. Use either a built-in icon by name (e.g. "aim_guy") or name your own custom PNG image from disk. Built-in icon names include the following: aim_guy aol_icon attention bomb bomb_dynamite bomb_grenade bubble_i bubble_q bulb butterfly cake circularsaw control_panel cow defrag disk_blu disk_blu_lbl disk_org disk_red disk_red_lbl disk_skull disk_yel dos e_orbit error error2 error3 error4 file_cabinet find fortunecookie garbage_empty garbage_full gun hammer heart help hub hwinfo ic_a keys keys2 keys3 labtec mac mail mail_deleted mailbox mouth mycomputer mycomputer2 mycomputer3 newspaper peripheral plant_leaf radiation ram recycle recycle2 scanner screw screw2 setup sknife skull skull2 skull3 tux tux_config ups zipdisk zipdisks --help, -h show help (default: false)
sudo dnf install golang gcc libXcursor-devel libXrandr-devel mesa-libGL-devel libXi-devel libXinerama-devel libXxf86vm-devel
sudo apt-get install golang gcc libgl1-mesa-dev xorg-dev
There is a GNU Makefile to make build commands easier to remember.
make setupinstalls Go dependencies for this project.
make buildwill produce the ./errorgen binary.
make runruns the Go app locally for development and testing.]
make cleanremoves the built binary.
Cross compiling: install Docker and fyne-cross and run
make release to produce the build. To install fyne-cross:
go install github.com/fyne-io/fyne-cross
In case of permission errors (Docker often needs run as root) you can try sudo running fyne-cross directly, e.g. to produce Windows amd64 and i386 builds a command like:
# which fyne-cross to use your locally installed Go binary for the current user, # so that root doesn't need to also install fyne-cross and have a $PATH set up. sudo $(which fyne-cross) windows -arch=\* sudo $(which fyne-cross) linux -arch=\* # Fix ownership permissions on the output folder sudo chown -R user:user fyne-cross
License & Author
Icons from the Atom Smasher Error Message Generator.
Developed by Noah Petherbridge, https://www.kirsle.net/
See my web page about this at https://www.kirsle.net/errorgen
Error Message Generator Copyright (C) 2023 Noah Petherbridge This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.