Легенда:
 новое сообщение
 закрытая нитка
 новое сообщение
 в закрытой нитке
 старое сообщение
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- Напоминаю, что масса вопросов по функционированию форума снимается после прочтения его описания.
- Новичкам также крайне полезно ознакомиться с данным документом.
[Win32] editbox с буфером в локальной куче 25.06.02 03:33
Автор: [H] Статус: Незарегистрированный пользователь
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пытаюсь создать editbox с буфером в локальной куче
стиль такой: WS_CHILD | WS_VISIBLE | WS_BORDER |
ES_LEFT | ES_MULTILINE | ES_AUTOVSCROLL |
WS_VSCROLL | DS_LOCALEDIT
hMem = (HLOCAL) SendMessage(hEdit,EM_GETHANDLE,0,0);
if (hMem == NULL) MessageBox(NULL,"1",0,MB_OK);
if ( LocalFree(hMem) != NULL) {
//MessageBox(NULL,"2",0,MB_OK);
ShowError(); //->>>>>>>>>>>>>>>> ошибка 6 - Error Look Up = "неверный дескриптер"
}
hMem = LocalAlloc(LPTR,1024);
SendMessage(hEdit,EM_SETHANDLE,(WPARAM) (HLOCAL) hMem,0);
в результате получаем editbox в котором ничего не печатается...кто поможет?
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[Win32] mozhet: Q130759? 25.06.02 04:57
Автор: + <Mikhail> Статус: Elderman
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INFO: EM_SETHANDLE and EM_GETHANDLE Messages Not Supported
Q130759
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The information in this article applies to:
Microsoft Win32 Software Development Kit (SDK), used with:
Microsoft Windows 95
the operating system: Microsoft Windows 2000
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SUMMARY
The EM_GETHANDLE and EM_SETHANDLE messages are not supported for
edit contols that are created as controls of a 32-bit application
under Windows 95. This is due to the way USER is designed under
Windows 95 and Windows 2000. 16-bit applications work the same
way they did under Windows version 3.1. That is, they can use
the EM_GET/SETHANDLE messages. Also Win32-based applications
running under Windows NT will be able to use these messages.
MORE INFORMATION
The EM_GETHANDLE and EM_SETHANDLE messages are used to retrieve
and set the handle of the memory currently allocated for a multiline
edit control's text. USER under Windows 95 and Windows 2000 is
a mixture of 16-bit and 32-bit code, so edit controls created inside
a 32-bit application cannot use these messages to retrieve or set
the handles. Trying to do so causes the application to cause a
general protection (GP) fault and thereby be terminated by the System.
One workaround that involves a little code modification is to use
the GetWindowTextLengt(), GetWindowText(), and SetWindowText() APIs
to retrieve and set the text in a edit control.
NOTE: USER is almost completely 16-bit, so 32-bit applications thunk
down to the 16-bit USER. Also note that the EM_GETHANDLE and EM_SETHANDLE
messages cannot be used with Win32s-based applications either.
Additional query words:
Keywords : kbCtrl kbEditCtrl kbOSWin2000 kbSDKWin32 kbGrpDSUser kbOSWin95
Issue type : kbinfo
Technology : kbOSWin2000 kbOSWinSearch
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подробно о проекте
Анализ криптографических сетевых...
