#include "ltwrappr.h"
L_INT LJp2FileFormat::ReadList(pszFile, phList, nBitsPerPixel, nOrder, pLoadOptions, pFileInfo, pReadCallBack, pUserData)
L_TCHAR * pszFile; |
JPEG 2000 file name |
pHBITMAPLIST phList; |
address of the variable to be updated |
L_INT nBitsPerPixel; |
resulting bitmaps pixel depth |
L_INT nOrder; |
desired color order |
pLOADFILEOPTION pLoadOptions; |
pointer to optional extended load options |
pFILEINFO pFileInfo; |
pointer to a structure |
LFile::LoadFileCallBack pReadCallBack; |
optional callback function |
L_VOID * pUserData; |
pointer to more parameters for the callback |
Creates a bitmap list and loads all frames (images) stored in JPEG 2000 file.
Parameter | Description | |
pszFile | Character string that contains the name of the JPEG 2000 file. | |
phList | Address of the HBITMAPLIST variable for the new list. | |
nBitsPerPixel | Resulting bitmap pixel depth. If zero [0], the bitmap will have the original files pixel depth (do not convert). | |
nOrder | The desired color order. Possible values are: | |
Value | Meaning | |
ORDER_RGB | [0] Read-green-blue order. | |
ORDER_BGR | [1] Blue green-red order. | |
ORDER_GRAY | [2] 12 or 16-bit grayscale image. 12 and 16-bit grayscale images are supported in Document/Medical imaging products only. | |
0 | The data is 8 bits per pixel or less. | |
ORDER_RGBORGRAY | [3] Load the image as red, green, blue, OR as a 12 or 16-bit grayscale image. 12 and 16-bit grayscale images are supported in Document/Medical imaging products only. | |
ORDER_BGRORGRAY | [4] Load the image as blue, green, red, OR as a 12 or 16-bit grayscale image. 12 and 16-bit grayscale images are supported in Document/Medical imaging products only. | |
ORDER_ROMM | [5] ROMM order. ROMM only supports 24 and 48-bit images. | |
ORDER_BGRORGRAYORROMM | [6] Load the image as blue, green, red, OR as a 12 or 16-bit grayscale image OR as ROMM. 12 and 16-bit grayscale images are supported in Document/Medical imaging products only. | |
pLoadOptions | Pointer to optional extended load options. Pass NULL to use the default load options. | |
pFileInfo | Pointer to a FILEINFO structure. If nothing is known about the file pass NULL. | |
pReadCallBack | Optional callback function for additional processing. | |
If you do not provide a callback function, pass NULL. | ||
If you do provide a callback function, use the function pointer as the value of this parameter. | ||
The callback function must adhere to the function prototype described in the LFile::LoadFileCallBack function. | ||
pUserData | Void pointer that you can use to pass one or more additional parameters used by the callback function. |
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
LJp2FileFormat::ReadList creates a bitmap list and loads all frames (images) stored in JPEG 2000 file in memory. If any of the layers has opacity channels it will be applied on the list bitmap unless ELO_COLOR_COMPONENT_ONLY flag is set in pLoadOptions. All of the engines boxes will be reset and updated with the new loaded boxes only.
Required DLLs and Libraries
LTJP2 For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application. |
Win32, x64.
For an example, refer to LJp2FileFormat::SaveList.
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