Our program need to disable the default UI. so we do the following code.
set the capability,
TwCapability capBrightness = new TwCapability(TwCap.ICAP_BRIGHTNESS, 100, TwType.Fix32);
rc = DScap(appid, srcds, TwDG.Control, TwDAT.Capability, TwMSG.Set, capBrightness);
if (rc != TwRC.Success)
{
CloseSrc();
return;
}
get the capability.
TwCapability capbright = new TwCapability(TwCap.ICAP_BRIGHTNESS, TwOn.Range, TwType.Fix32, -1);
rc = DScap(appid, srcds, TwDG.Control, TwDAT.Capability, TwMSG.Get, capbright);
if (rc != TwRC.Success)
{
CloseSrc();
return;
}
else
{
TwRANGE arr = capbright.GetTwRange();
//TwRANGE arr = (TwRANGE)Marshal.PtrToStructure(Twain.GlobalLock(Handle), typeof(TwRANGE));
}
internal class TwRANGE{
ushort ItemType;
uint MinValue; /* Starting value in the range. */
uint MaxValue; /* Final value in the range. */
uint StepSize; /* Increment from MinValue to MaxValue. */
uint DefaultValue; /* Power-up value. */
uint CurrentValue; /* The value that is currently in effect. */
}
But I find that its
MaxValue 1000,
MinValue 64536;
Current Value 65636.
So what is the problem? I could set brightness in the Default UI, but why i can’t set in our Customized Acquire?????
And I didn’t quite understand what Zoltan Barna said that to use commercial drivers ? to use different version of twain_32.dll ?