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Overview |
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Group |
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Quick Info
Windows NT
| Yes
| Win95
| No
| Win32s
| No
| Import Library
| -
| Header File
| winuser.h
| Unicode
| No
| Platform Notes
| None
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EM_SETHANDLE
An application sends an EM_SETHANDLE message to set the handle of the memory
that will be used by a multiline edit control.
EM_SETHANDLE
wParam = (WPARAM) (HLOCAL) hloc; // handle of memory buffer
lParam = 0; // not used; must be zero
Parameters
hloc
Value of wParam. Identifies the memory the edit control uses to store the currently displayed
text instead of allocating its own memory. If necessary, the control
reallocates this memory.
Return Values
This message does not return a value.
Remarks
Before an application sets a new memory handle, it should send an EM_GETHANDLE message to retrieve the handle of the current memory buffer and should free
that memory.
An edit control automatically reallocates the given buffer whenever it needs
additional space for text, or it removes enough text so that additional space is
no longer needed.
Sending an EM_SETHANDLE message clears the undo buffer (EM_CANUNDO returns
zero) and the internal modification flag (EM_GETMODIFY returns zero). The edit
control window is redrawn.
An application can send this message to a multiline edit control in a dialog
box only if it has created the dialog box with the DS_LOCALEDIT style flag set.
See Also
EM_CANUNDO, EM_GETHANDLE, EM_GETMODIFY
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