References ▼
#include "ltwrappr.h"
L_INT LTwain::SetImageUnit (nUnit)
Sets the image unit value used to transfer images from the current TWAIN source.
Specifies the unit value to set. For more information on possible values, refer to the TWAIN specification.
| Value | Meaning |
|---|---|
| SUCCESS | The function was successful. |
| < 1 | An error occurred. Refer to Return Codes. |
This function internally sets the image unit capability ICAP_UNITS. For more information on this capability, refer to the TWAIN specification.
To obtain the current image unit value, call the LTwain::GetImageUnit function.
Required DLLs and Libraries
L_INT LTwain__SetImageUnitExample(LTwain * plTwain){L_INT nRet = SUCCESS;L_INT nUnit;nRet = plTwain->GetImageUnit (&nUnit);if (nRet == SUCCESS){if (nUnit == TWUN_INCHES){nRet = plTwain->SetImageUnit(TWUN_INCHES);if(nRet != SUCCESS)return nRet;}}elsereturn nRet;L_INT nBPP;nRet = plTwain->GetImageBitsPerPixel (&nBPP);if (nRet == SUCCESS){if (nBPP == 24)plTwain->SetImageBitsPerPixel (24);}elsereturn nRet;return SUCCESS;}