This function decodes an image, or a rectangular portion thereof, that was encrypted using IG_IP_encrypt().
Declaration:
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AT_ERRCOUNT ACCUAPI IG_IP_decrypt (
HIGEAR hIGear,
LPAT_RECT lpRect,
AT_MODE nEncryptType,
LPSTR lpszPassword
);
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Arguments:
| Name | Type | Description |
| hIGear | HIGEAR | HIGEAR handle of image to be decoded. |
| lpRect | LPAT_RECT | Far pointer to an AT_RECT struct specifying the rectangular portion of the image to decode. Set = NULL for the whole image. |
| nEncrptyType | AT_MODE | An IG_ENCRYPT_METHOD_ constant specifying how the image was encoded. |
| lpszPassword | LPSTR | Far pointer to your zero-terminated password string. |
Return Value:
Returns the number of ImageGear errors that occurred during this function call.
Supported Raster Image Formats:
All pixel formats supported by ImageGear Professional.
Sample:
FlashPix
Example:
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HIGEAR hIGear; /* Decrypt the whole hIGear image by method A & with "Top Secret" password */ IG_IP_decrypt (hIGear, NULL, IG_ENCRYPT_METHOD_A, "Top Secret"); |
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Remarks:
This function works on a DIB, not on a file. You must supply both the encryption method and the password that were used in the call to IG_IP_encrypt().