LBuffer::LBuffer
#include "ltwrappr.h"
L_VOID LBuffer::LBuffer()
L_VOID LBuffer::LBuffer(dwSize)
L_VOID LBuffer::LBuffer(lpStr)
L_VOID LBuffer::LBuffer(lpData, dwSize)
L_VOID LBuffer::LBuffer(LBufferSrc)
DWORD_PTR dwSize; |
/* number of bytes with which to initialize the buffer */ |
L_TCHAR * lpStr; |
/* character string */ |
L_VOID * lpData; |
/* pointer to a data buffer */ |
LBuffer& LBufferSrc; |
/* an LBuffer object*/ |
Constructs the object and initializes the member variables.
Parameter |
Description |
dwSize |
Number of bytes with which to initialize the buffer. |
lpStr |
Character string to be copied to the buffer. |
lpData |
Pointer to data buffer to be copied. |
LBufferSrc |
A LEAD LBuffer object to copy. |
Returns
None.
Comments
LBuffer::LBuffer() is a constructor for the LBuffer class.
LBuffer::LBuffer(dwSize) will initialize the member variables and allocate the specified size of memory.
LBuffer::LBuffer(lpStr) will copy the specified string to the class object's buffer.
LBuffer::LBuffer(lpData, dwSize) will copy the specified buffer to the class object's buffer. This results in two copies of the buffer.
LBuffer::LBuffer(LBufferSrc) will copy the specified class object's buffer. This results in two copies of the buffer.
The parameter LBufferSrc is passed by reference, and is a required parameter.
Required DLLs and Libraries
LTDIS For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application. |
See Also
Functions: |
Example
This is an example for LBuffer::LBuffer():
L_INT LBuffer__LBufferFirstExample() { // this will call the default constructor and destructor when it is out of scope LBuffer LeadBuffer ; //... return SUCCESS; } //This is an example for LBuffer::LBuffer(dwSize): L_INT LBuffer__LBufferSecondExample(LBitmapBase& LeadBitmap) { L_INT nBytesPerLine ; nBytesPerLine = LeadBitmap.GetBytesPerLine() ; LBuffer LeadBuffer ((DWORD)nBytesPerLine) ; //... return SUCCESS; } //This is an example for LBuffer::LBuffer(lpStr): L_INT LBuffer__LBufferThirdExample() { LBuffer LeadBuffer(TEXT("ABCD String")) ; //... return SUCCESS; } //This is an example for LBuffer::LBuffer(lpData, dwSize): L_INT LBuffer__LBufferForthExample(LBitmapBase& LeadBitmap) { LBuffer LeadBuffer ; L_INT nBytesPerLine ; L_INT nRet; L_CHAR * pBuff ; nBytesPerLine = LeadBitmap.GetBytesPerLine() ; nRet =(L_INT)LeadBitmap.GetRow(&LeadBuffer,5) ; if(nRet < 1 ) return nRet; pBuff = (L_CHAR *)LeadBuffer.Lock() ; LBuffer LeadConstrBuffer(pBuff,(DWORD)nBytesPerLine) ; LeadBuffer.Unlock() ; //... return SUCCESS; } //This is an example for LBuffer::LBuffer(LBufferSrc): L_INT LBuffer__LBufferFifthExample(LBitmapBase& LeadBitmap) { LBuffer LeadBuffer ; L_INT nRet; nRet =(L_INT)LeadBitmap.GetRow(&LeadBuffer,5) ; if(nRet < 1) return nRet; LBuffer LeadConstrBuffer(LeadBuffer) ; //... return SUCCESS; }