Need help to customize hbar on glcd-picolcdgfx

[Ta Xuan Truong]

Hi all,
I'm trying to customze hbar to thinner. After looking for source, I found these line in file drivers.c handle hbar data:

void
drivers_hbar(int x, int y, int len, int promille, int pattern)
{
    Driver *drv;

    debug(RPT_DEBUG, "%s(x=%d, y=%d, len=%d, promille=%d, pattern=%d)",
          __FUNCTION__, x, y, len, promille, pattern);

    ForAllDrivers(drv) {
        if (drv->hbar)
            drv->hbar(drv, x, y, len, promille, pattern);
        else
            driver_alt_hbar(drv, x, y, len, promille, pattern);
    }
}

My problem is I can't find anything related to drv->hbar to customize that function.

Update 1: Found drv->hbar called from lcd.h, line 157:

void (*hbar) (struct lcd_logical_driver *drvthis, int x, int y, int len, int promille, int pattern);

Update 2: Found in changelog v5.0

LCDd will use fill-in functions for drivers that don't support a certain
function. Available for: vbar, hbar, bignum, heartbeat, icon, cursor.

Looking for glcd_drv.c, I found:

MODULE_EXPORT void
glcd_hbar(Driver *drvthis, int x, int y, int len, int promille, int options)

Tried to edit but still no luck.

Could you please help? Thanks so much.

[Ta Xuan Truong]

Problem solved.
I forgot to copy driver module (glcd.so) to target driver directory. For those who need to customize hbar (or vbar), the functions are located in server/drivers/glcd_drv.c

Hope this help.