turn backlight on and off programatically

try as I might I cannot get the mini2440 to turn the backlight on or off
using vb
found a few procedures but none of them do a thing

Help its driving me mad!

backlight is part of COREDLL.dll, you should be able to Pinvoke it or just
use domodom's GPIO driver to turn GPG4 on/off

void BL_On(BOOL bOn)
{
    if(bOn) {
    if (g_BLInfo.m_dwStatus != BL_ON)
    {
      g_BLInfo.m_dwStatus = BL_ON;
      if (v_pIOPRegs) {
        //RETAILMSG(1, (TEXT("BL_ON\r\n")));
        v_pIOPRegs->rGPGDAT   |=  (1 << 4);
      }
    }
    }
    else {
    if (g_BLInfo.m_dwStatus != BL_OFF)
    {
      g_BLInfo.m_dwStatus = BL_OFF;
      if (v_pIOPRegs)  {
        //RETAILMSG(1, (TEXT("BL_OFF\r\n")));
        v_pIOPRegs->rGPGDAT   &=  ~(1 << 4);
      }
    }
    }
}

ahhh ha many thanks thats great

im fairly certain but im guessing it cant be dimmed on the brightness?

Timers are on GPB port, don't think GPG can be configured as PWM out.