#include "ltivw.h"
L_INT pEXT_CALLBACK YourFunction(hCellWnd, nCellIndex, hDC, lpRect, pUserData)
L_HWND hCellWnd; |
handle to the cell window |
L_INT nCellIndex; |
index of the cell that called the callback |
HDC hDC; |
memory DC for painting |
RECT * lpRect; |
pointer to a structure |
L_VOID * pUserData; |
user data |
This callback function is called before the window control paints a cell that contains an owner draw tag.
Parameter |
Description |
hCellWnd |
A handle to the window that represents the Medical Viewer Cell. |
nCellIndex |
Index of the cell, which has the owner draw tag. |
hDC |
Memory DC that is used to paint the cell. |
lpRect |
Pointer to a RECT structure that contains the area of the owner draw tag in the Memory DC. |
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_DispContainerSetTagCallBack.) Keep in mind that this is a void pointer, which must be cast to the appropriate data type within your callback function. |
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
When the window control paints a cell that contains an "owner draw" tag, this callback function is called to allow the user to draw a custom tag. This callback function is only called however, if it has been set by calling L_DispContainerSetTagCallback.
To get the current callback function used to draw custom tags, call L_DispContainerGetTagCallBack.
Required DLLs and Libraries
LTIVW For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application. |
Functions: |
L_DispContainerSetTagCallBack, L_DispContainerGetTagCallBack, L_DispContainerSetActionCallBack, L_DispContainerGetActionCallBack, DISPCONTAINERACTIONCALLBACK |
Topics: |
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For an example, refer to L_DispContainerCreate.