Retro terminal

Project repository: https://gitlab.com/qnx/projects/simple-terminal.git

Simple Terminal is a QNX port of a simple terminal written for use with X11 desktops.

The purpose of this project is to give the simple terminal a retro look, by modifying the simple-terminal folder included in the qnxuser projects folder.

Note:

To copy and paste the following commands, open the simple-terminal.md file in the ~/projects/READMEs folder.

Prerequisites

Before building this project, run the following command in the terminal to install the necessary dependencies:

sudo apk add ncurses-dev qnx-screen-dev

Then, follow these steps to set up the project:

Navigate to the project folder:
```
cd ~/projects/simple-terminal
```
Build the project:
```
make
```
Install the executable and its related files:
```
sudo make install
```

Editing and building with Geany

Open the File menu, select Open, then open screen.c:

Make the following updates to screen.c:

Find the color enumerations and add these entries to the end of the existing list:

MONO_P1_GREEN,
MONO_P3_AMBER,
MONO_P4_WHITE,
MONO_VT100_LIGHT_GRAY,
MONO_VT100_LIGHT_BLUE,
MONO_VT100_WHITE,

Find the NUM_COLOURS macro and change the value to 26:
```
#define NUM_COLOURS 26
```

Find the init_colours() function and add the array entries corresponding to the new enumerations at the end of the function:

colours[ROLE(MONO_P1_GREEN)] = (colour_t){ 0.2, 1.0, 0.4 };
colours[ROLE(MONO_P3_AMBER)] = (colour_t){ 1.0, 1.0, 0.4 };
colours[ROLE(MONO_P4_WHITE)] = (colour_t){ 1.0, 1.0, 1.0 };
colours[ROLE(MONO_VT100_LIGHT_GRAY)] = (colour_t){ 0.866666667, 0.866666667, 0.866666667 };
colours[ROLE(MONO_VT100_LIGHT_BLUE)] = (colour_t){ 0.6, 0.866666667, 1.0 };
colours[ROLE(MONO_VT100_WHITE)] = (colour_t){ 1.0, 1.0, 1.0 };

Find the xdrawcursor() function and make this change:
```
//g.bg = CURSOR;
g.bg = MONO_P1_GREEN;
```

Open the config.c file the same way you opened screen.c in the previous step. Then, make the following updates:

Append the following lines to the colorname array:

"#33ff66", /* Green phosphor (P1) monochrome terminal */
"#ffff33", /* Amber phosphor (P3) monochrome terminal */
"#ffffff", /* White phosphor (P4) monochrome terminal */
"#dddddd", /* DEC VT100 light gray monochrome terminal */
"#99ddff", /* DEC VT100 light blue monochrome terminal */
"#ffffff", /* DEC VT100 white monochrome terminal */

Change the default foreground color a few lines below the above snippet:
```
//unsigned int defaultfg = 258;
unsigned int defaultfg = 260;
```

Save your changes.
Open the Build menu and select Make:
Open the Build menu again and select Make Custom Target. Type Install in the field and click OK:
When prompted, enter your password to give the operation root permissions.
Shut down or log out of the desktop to return to the demolauncher. Then, click the terminal icon ().
A green, retro terminal is displayed:

Page updated: January 08, 2026