TwainSetImageLayout and TwainGetImageLayout issue

[ctn]

Dear all

There is either a wrong documentation or implementation at TwainSetImageLayout function.

In gdTwain documentation the following is described:

object Required. An object expression that evaluates to an object in the Applies To list.
nLeft Required. Double. Distance to left edge to scan measured in inches.
nTop Required. Double. Distance to top edge to scan measured in inches.
nRight Required. Double. Distance to right edge to scan measured in inches.
nBottom Required. Double. Distance to bottom edge to scan measured in inches.

but the implementation of this function looks different, because I think nRight and nBottom are in fact nWidth and nHeight.
Could you please investigate?

Thank you
Br,
ctn

[ctn]

This is for instace the value I got (A4 paper):

left=0, top=0, right=8.268005, bottom=11.692993

Br,
ctn

[Loïc]

Hi,

The doc is correct.

nRight and nBottom are in fact nWidth and nHeight

It is because nLeft = 0 & nTop = 0 in your case. See attached screen.

Best regards,

Loïc

[ctn]

But then the de description of the Parameters should be:

object Required. An object expression that evaluates to an object in the Applies To list.
nLeft Required. Double. Distance to left edge to scan measured in inches.
nTop Required. Double. Distance to top edge to scan measured in inches.
nRight Required. Double. Distance to left edge to scan measured in inches.
nBottom Required. Double. Distance to top edge to scan measured in inches.

Thanks for feedback.
ctn

[Loïc]

Hi,

I will update the doc to be more clear on this subject.

here the next update:

nLeft Required. Double. Value of the left-most edge of the area to scan measured in inches.
nTop Required. Double. Value of the top-most edge of the area to scan measured in inches.
nRight Required. Double. Value of the right-most edge of the area to scan measured in inches. Note: ImageWidth = nRight - nLeft.
nBottom Required. Double. Value of the bottom-most edge of the area to scan measured in inches. Note: ImageHeight = nBottom - nTop.

Hope this clear now.

Best regards,

Loïc

[ctn]

Hi Loïc

Thanks for clarifications.
Br, ctn