ADLINK Technology HDV62, User Manual

Page: 120 / 164

Programming Guide 109
5.4.1.2 Cropping
Purpose
These functions read or write actual output resolution.
Prototype
 C/C++
HRESULT WriteCropping (RECT Rt)
HRESULT ReadCropping (RECT * Rt)
 C#
int WriteCropping (Rectangle RECT Rt)
int ReadCropping (out Rectangle RECT Rt)
 VB.Net
WriteCropping (ByVar Rt as RECT) As Integer
ReadCropping (ByRef Rt as RECT) As Integer
Parameters
 Rt
A rectangle setting to crop the sensor image as illustrated in
Figure 4-1. The rectangle must be located inside the sensor
image. Actual image starts from (Rt.left, Rt.top) and its
width is Rt.right – Rt.left and height is Rt.bottom – Rt.top.
Actual image width needs to be multiple of 16 pixels and
actual height is even. If the sensor source is interlace, the
top value in Rt need to be even
Return Value
No error occurs if return value >= 0; if negative value, call AMGet-
ErrorText function to get error information about return codes.