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USB 2.0 GigE |
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Syntax
INT is_LockDDMem (HIDS hCam, void** ppMem, INT* pPitch)
Description
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This function is obsolete and should not be used anymore. We recommend to use the is_DirectRenderer() function instead. |
is_LockDDMem() enables access to the image memory in DirectDraw mode and returns the pointer to the image memory. In most cases, the image memory is located on the graphics card. Using the pointer, you have direct access to the image memory. Make sure to release the memory as early as possible using the is_UnlockDDMem() function.
Calling is_LockDDMem() will not interrupt the process of digitizing an image and saving it to the memory area.
While a LockDDMem … UnlockDDMem block is executed in DirectDraw BackBuffer mode, the contents of the back buffer will not be refreshed on the screen.
Input parameters
hCam |
Camera handle |
ppMem |
Pointer to the variable that holds the address pointer |
pPitch |
Pointer to the variable that holds the pitch value |
Return values
IS_SUCCESS |
Function executed successfully |
IS_NO_SUCCESS |
General error message |
Related functions
•is_LockSeqBuf()
•is_UnlockSeqBuf()
