ImageGear Professional v18 for Mac
IG_IP_alpha_create
| ImageGear Professional v18.1 > API Reference Guide > Core Component API Reference > Core Component Functions Reference > Image Processing Functions > IG_IP_alpha_create |
This function has been deprecated and will be removed from the public API in a future release. Please use IG_image_create instead.
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AT_ERRCOUNT ACCUAPI IG_IP_alpha_create(
HIGEAR hIGear,
HIGEAR hIBackgrnd,
AT_MODE nCreateMode,
LPHIGEAR lphAlpha
);
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| Name | Type | Description |
| hIGear | HIGEAR | HIGEAR handle of image. |
| hIBackgrnd | HIGEAR | HIGEAR handle to a background image. |
| nCreateMode | AT_MODE | An integer value of type AT_MODE that tells ImageGear what bit depth the alpha channel should have. The possible settings for this variable, which are defined in accucnst.h are: IG_ALPHA_CREATE_1 and IG_ALPHA_CREATE_8. |
| lphAlpha | LPHIGEAR | Far pointer to the newly created alpha channel. |
Returns the number of ImageGear errors that occurred during this function call. If there are no errors, the return value is IGE_SUCCESS.
All pixel formats supported by ImageGear Professional.
This function creates an alpha channel.
The difference from function IG_image_create_alpha() is that newly created alpha channel is not associated with any HIGEAR - it's only created and returned via last parameter lphAlpha. Other parameters have the same meaning as those of IG_image_create_alpha().
See also the section ImageGear Alpha Channel Support.