Can't write in CAPS LOCK when typing in the smartphone.

[RicardoG1981]

I use the up arrow to change to caps and the smartphone does make the letters bigger but when it sends to the raspberry pi it receives lower letters.

[seymour-bootay]

not sure if this an active project but I thought it would be a good springboard for a project I am working on. Looks like the caps problem is related to the following method:

static inline void SendKeysym(int keySym) {
    Display *display = XOpenDisplay(NULL);
    if (display != NULL) {
                WakeUp(display);

        XTestFakeKeyEvent(display, XKeysymToKeycode(display, keySym), True, CurrentTime );
        XTestFakeKeyEvent(display, XKeysymToKeycode(display, keySym), False, CurrentTime );
        XFlush(display);
        XCloseDisplay(display);
    }
}

I believe when converting a keysym to keycode, keycodes do not have the concept of upper and lower case. You could probably check if the keysym is upper and if it is simulate a shift press.