HM UPDATE OBJCOM WINDOW CHAIN: Difference between revisions
Created page with "{{DISPLAYTITLE:HM_UPDATE_OBJCOM_WINDOW_CHAIN}} This message is sent to the currently active communication object by the communication object who wants to withdraw from the communication chain. ==Syntax== <pre> param1 HWND hwnd; →The handle of the object to be withdrawn from the communication chain.: param2 HWND hwnd; →Window containing the handle of the object to be replaced.: </pre> ==Parameters== ;hwnd (HWND) - input: The handle of the obje..." |
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{{DISPLAYTITLE:HM_UPDATE_OBJCOM_WINDOW_CHAIN}} | {{DISPLAYTITLE:HM_UPDATE_OBJCOM_WINDOW_CHAIN}} | ||
This message is sent to the currently active communication object by the | This message is sent to the currently active communication object by the communication object who wants to withdraw from the communication chain. | ||
communication object who wants to withdraw from the communication chain. | |||
==Syntax== | ==Syntax== | ||
<pre> | <pre> | ||
param1 | param1 | ||
HWND hwnd; /* The handle of the object to be withdrawn from the communication | HWND hwnd; /* The handle of the object to be withdrawn from the communication chain. */ | ||
param2 | param2 | ||
| Line 22: | Line 20: | ||
==Remarks== | ==Remarks== | ||
The object that receives this message should check to see if the object | The object that receives this message should check to see if the object handle returned from '''HM_SET_OBJCOM_WINDOW''' is equal to the handle in '''param1'''. If the handle is equal, then the handle in '''param1''' should be replaced by the handle in '''param2'''. If the handle is not equal and the handle previously received is not NULL HANDLE, then send HM_UPDATE_OBJCOM_WINDOW_CHAIN to that object. | ||
handle returned from | |||
handle is equal, then the handle in '''param1''' should be replaced by the handle in '''param2'''. | |||
If the handle is not equal and the handle previously received is not NULL | |||
HANDLE, then send HM_UPDATE_OBJCOM_WINDOW_CHAIN to that object. | |||
==Default Processing== | ==Default Processing== | ||
Revision as of 04:16, 28 April 2025
This message is sent to the currently active communication object by the communication object who wants to withdraw from the communication chain.
Syntax
param1 HWND hwnd; /* The handle of the object to be withdrawn from the communication chain. */ param2 HWND hwnd; /* Window containing the handle of the object to be replaced. */
Parameters
- hwnd (HWND) - input
- The handle of the object to be withdrawn from the communication
- chain.
- hwnd (HWND) - input
- Window containing the handle of the object to be replaced.
Returns
- ulReserved (ULONG) - return
- Reserved value, should be 0.
Remarks
The object that receives this message should check to see if the object handle returned from HM_SET_OBJCOM_WINDOW is equal to the handle in param1. If the handle is equal, then the handle in param1 should be replaced by the handle in param2. If the handle is not equal and the handle previously received is not NULL HANDLE, then send HM_UPDATE_OBJCOM_WINDOW_CHAIN to that object.
Default Processing
None.