Converts a Windows device independent bitmap (DIB) into an LBitmapBase object. When this function is completed, there are two copies of the image in memory: the original DIB and the LEAD bitmap. Freeing one will not affect the other.
#include "ltwrappr.h"
virtual L_INT LBitmapBase::ConvertFromDIB(pInfo, pBits)
Pointer to the Windows BITMAPINFO structure.
Pointer to a buffer containing the DIB image data.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
This function updates information in the bitmap handle and copies the DIB image data into the LEAD bitmap.
This function supports the standard DIB formats (BI_RGB and BI_BITFIELDS) as well as some FOURCC (Four Character Code) formats that some capture cards output.
These are the FOURCC that LEADTOOLS supports at the moment:
Win32, x64.
This example loads a bitmap, converts it to a DIB, then converts the DIB back to a bitmap
L_INT LBitmapBase__ConvertFromDIBExample(HWND hWnd,LBitmapBase LeadBitmap)
{
UNREFERENCED_PARAMETER(hWnd);
L_INT nRet;
LBitmapBase TmpBitmap;
HGLOBAL hDIB;
BITMAPINFO * pInfo;
L_UCHAR * pBits;
L_INT nColorData;
/* Load a bitmap at 8 bits per pixel so that we can demonstrate palette handling */
nRet =TmpBitmap.Load (MAKE_IMAGE_PATH(TEXT("ImageProcessingDemo\\Image3.cmp")), 8, ORDER_BGR);
if(nRet !=SUCCESS)
return nRet;
hDIB = TmpBitmap.ConvertToDIB(DIB_BITMAPV5HEADER);
pInfo = (BITMAPINFO *) GlobalLock( hDIB );
if(pInfo->bmiHeader.biBitCount <= 8)
nColorData = 1 << pInfo->bmiHeader.biBitCount;
else
nColorData = 0;
pBits = (L_UCHAR *) pInfo + sizeof(BITMAPINFOHEADER) + (nColorData * sizeof(RGBQUAD));
nRet =LeadBitmap.ConvertFromDIB(pInfo, pBits);
if(nRet !=SUCCESS)
return nRet;
GlobalUnlock(hDIB);
GlobalFree(hDIB);
nRet =TmpBitmap.Free();
if(nRet !=SUCCESS)
return nRet;
return SUCCESS;
}
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
Multimedia
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms
Supported Platforms
.NET, Java, Android, and iOS/macOS Assemblies
Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
HTML5 JavaScript Libraries
Imaging, Medical, and Document
Your email has been sent to support! Someone should be in touch! If your matter is urgent please come back into chat.
Chat Hours:
Monday - Friday, 8:30am to 6pm ET
Thank you for your feedback!
Please fill out the form again to start a new chat.
All agents are currently offline.
Chat Hours:
Monday - Friday
8:30AM - 6PM EST
To contact us please fill out this form and we will contact you via email.