ImageGear Professional v18.2 > API Reference Guide > Core Component API Reference > Core Component Functions Reference > Multi Page Image Functions > IG_mpi_create |
This function allocates and initializes a new multi-page image and returns its handle.
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AT_ERRCOUNT ACCUAPI IG_mpi_create( LPHMIGEAR lphMIGear, UINT nPages ); |
Name | Type | Description |
lpHMIGear | LPHMIGEAR | A pointer indicating where to return the handle of the allocated and initialized multi-page image. |
nPage | UINT | The number of multi-page image pages that should be created. |
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.
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HMIGEAR hMIGear; /* handle to multi-page image */ AT_ERRCOUNT nErrCount = IGE_SUCCESS; /* will hold returned error count */ nErrCount = IG_mpi_create( &hMIGear, 0 ); ... /* any operations with hMIGear */ nErrCount = IG_mpi_delete( hMIGear ); |
This new image is set with nPages. Each image is initialized with the default value NULL. If there is a failure, then the returned handle is NULL and an error is set.
The multi-page image is array of pages where each page is a HIGEAR object. All pages are numbered beginning with a 0 index, so that 0 - is the first page, 1 - is the second page, etc. If the image contains nCount number of pages, then its pages can be accessed through indexes 0 - nCount-1. The value of each page can be either NULL (default value) or value HIGEAR image.