Available in LEADTOOLS Medical Imaging toolkits. |
DISPCONTAINERREGIONCALLBACK
#include "l_bitmap.h"
L_INT pEXT_CALLBACK YourFunction(hCellWnd, hRgn, nCellIndex, nSubCellIndex, uOperation, pUserData)
HWND hCellWnd; |
/* handle to the cell window */ |
HRGN hRgn; |
/* handle to the Windows region */ |
L_INT nCellIndex; |
/* index of the cell */ |
L_INT nSubCellIndex; |
/* index of the sub-cell */ |
L_UINT uOperation; |
/* action taking regarding the existing region */ |
L_VOID * pUserData; |
/* pointer to more parameters for the callback */ |
This callback is called every time the user creates, changes or removes a region from one of the bitmaps displayed in a cell.
Parameter |
Description |
|
hCellWnd |
A handle to the window that represents the Medical Viewer Cell. |
|
hRgn |
Handle to the Windows region. |
|
nCellIndex |
A zero-based index of the cell that contains the tag to be deleted. Pass -2 to delete the tag of the specific information in all selected cells in the container. |
|
nSubCellIndex |
A zero-based index of the sub-cell. This sub-cell contains the image that contains the region changed. Pass -2 to refer to the selected sub-cell. |
|
uOperation |
The action to take regarding the existing bitmap region, if one is defined. It can be one of the following value: |
|
|
Value |
Meaning |
|
L_RGN_AND |
[0] An AND operation has been applied to the existing region. |
|
L_RGN_SET |
[1] A new region has been created. |
|
L_RGN_ANDNOTRGN |
[3] The existing region has been reduced. |
|
L_RGN_OR |
[4] A new region has been combined with the existing one. |
|
L_RGN_SETNOT |
[6] An inverted region has been created. |
|
L_RGN_REMOVE |
[8] The existing region has been removed. |
pUserData |
A void pointer that you can use to access a variable or structure containing data that your callback function needs. This gives you a way to receive data indirectly from the function that uses this callback function. (This is the same pointer that you pass in the pUserData parameter of L_DispContainerSetRegionCallBack.) Keep in mind that this is a void pointer, which must be cast to the appropriate data type within your callback function. |
Returns
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
Comments
To get the region callback, use L_DispContainerGetRegionCallBack. To set the region callback, use L_DispContainerSetRegionCallBack.
Required DLLs and Libraries
LTIVW |
See Also
Example
For an example, refer to L_DispContainerGetRegionCallBack.