323SDK (Software development Kit)
© 2010 Thorlabs
7.5.6
is_LockDDMem
Syntax
INT is_LockDDMem (HIDS hCam, void** ppMem, INT* pPitch)
Description
This function is obsolete and should not be used anymore. We recommend to use the
is_DirectRenderer() function instead (see also Obsolete Functions ).
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 digitising 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
Pointer to the variable that holds the address pointer
Pointer to the variable that holds the pitch value
Return Values
Function executed successfully
Related Functions
is_UnlockDDMem()
is_LockDDOverlayMem()
is_UnlockDDOverlayMem()
is_LockSeqBuf()
is_UnlockSeqBuf()
is_UpdateDisplay()
130 316
337
337
324
338
203
291
339