前所未所的难题

[yongxing]

怎样在WIN2000里把*****显示出来？
由于 Windows NT/2000 在安全性上面的改进，Areslee的方法行不通，目前所有的查
看****的工具都没用处，
因为使用常规的 SendMessage( WM_GETTEXT ) 方法或者GetWindowText根本就不管用，
会得到一个5 号错误，即 ERROR_ACCESS_DENIED。
可能只能用DLL＋EXE来实现。
如何在钩子函数里把＊＊＊＊抓出来。

[Mover]

关注

[蝈蝈俊]

关注

[DragonCheng]

直接将窗体属性改掉行吗

[yongxing]

如何更改Edit的属性？
是用BOOL SetProp(HWND hWnd,LPCTSTR lpString,HANDLE hData);吗？
我不知道“＊＊＊＊”的属性用什么String表示。

[Fenian]

care

[yongxing]

高手们，帮帮忙吧

[shines77]

关注高手

[yongxing]

Help me.

[yongxing]

高手们，帮帮忙吧

[xiaotiao]

因为在W2K中已经没有AllocCSAsDSSegment这样的函数,所以你根本就没有办法截获他在何处调用这个窗口的构造函数.

[yongxing]

不行的，老兄，我把下面这段翻译一下：
Remarks
The SetWindowLong function fails if the window specified by the hWnd parameter does not belong to the same process as the calling thread
备注：
如果由hWnd参数指定的窗口与调用线程不属于同一进程，将导致SetWindowLong函数失败。

[yongxing]

Help me please.

[Ideal]

在 Win2000 中，想取密码，似乎有点玄——因为据说是加密了的缘故，也不知对不对。

[wolfzhu]

编辑框的PASSWORD属性风格为ES_PASSWORD，可用SetWindowLong来改变。下面这段是从MSDN上拷下来的，没有翻译，请多多见谅：

SetWindowLong
The SetWindowLong function changes an attribute of the specified window. The function also sets a 32-bit (long) value at the specified offset into the extra window memory of a window.

LONG SetWindowLong(
HWND hWnd, // handle of window
int nIndex, // offset of value to set
LONG dwNewLong // new value
);

Parameters
hWnd
Handle to the window and, indirectly, the class to which the window belongs.
nIndex
Specifies the zero-based offset to the value to be set. Valid values are in the range zero through the number of bytes of extra window memory, minus 4; for example, if you specified 12 or more bytes of extra memory, a value of 8 would be an index to the third 32-bit integer. To set any other value, specify one of the following values: Value Action
GWL_EXSTYLE Sets a new extended window style.
GWL_STYLE Sets a new window style.
GWL_WNDPROC Sets a new address for the window procedure.
GWL_HINSTANCE Sets a new application instance handle.
GWL_ID Sets a new identifier of the window.
GWL_USERDATA Sets the 32-bit value associated with the window. Each window has a corresponding 32-bit value intended for use by the application that created the window.


The following values are also available when the hWnd parameter identifies a dialog box: Value Action
DWL_DLGPROC Sets the new address of the dialog box procedure.
DWL_MSGRESULT Sets the return value of a message processed in the dialog box procedure.
DWL_USER Sets new extra information that is private to the application, such as handles or pointers.



dwNewLong
Specifies the replacement value.
Return Values
If the function succeeds, the return value is the previous value of the specified 32-bit integer.

If the function fails, the return value is zero. To get extended error information, callGetLastError.

If the previous value of the specified 32-bit integer is zero, and the function succeeds, the return value is zero, but the function does not clear the last error information. This makes it difficult to determine success or failure. To deal with this, you should clear the last error information by callingSetLastError(0) before calling SetWindowLong. Then, function failure will be indicated by a return value of zero and a GetLastError result that is nonzero.

Remarks
The SetWindowLong function fails if the window specified by the hWnd parameter does not belong to the same process as the calling thread.

Certain window data is cached, so changes you make using SetWindowLong will not take effect until you call the SetWindowPos function.

If you use SetWindowLong with the GWL_WNDPROC index to replace the window procedure, the window procedure must conform to the guidelines specified in the description of the WindowProc callback function.

If you use SetWindowLong with the DWL_MSGRESULT index to set the return value for a message processed by a dialog procedure, you should return TRUE directly afterwards. Otherwise, if you call any function that results in your dialog procedure receiving a window message, the nested window message could overwrite the return value you set using DWL_MSGRESULT.

Calling SetWindowLong with the GWL_WNDPROC index creates a subclass of the window class used to create the window. An application can subclass a system class, but should not subclass a window class created by another process. The SetWindowLong function creates the window subclass by changing the window procedure associated with a particular window class, causing the system to call the new window procedure instead of the previous one. An application must pass any messages not processed by the new window procedure to the previous window procedure by calling CallWindowProc. This allows the application to create a chain of window procedures.

Reserve extra window memory by specifying a nonzero value in the cbWndExtra member of the WNDCLASSEX structure used with the RegisterClassEx function.

You must not call SetWindowLong with the GWL_HWNDPARENT index to change the parent of a child window. Instead, use the SetParent function.

Windows CE: The nIndex parameter must be a multiple of 4 bytes.

Unaligned access is not supported.

The following nIndex parameter values are not supported:

GWL_HINSTANCE

GWL_HWNDPARENT

GWL_USERDATA

Windows CE versions 2.0 and later support the DWL_DLGPROC value in the nIndex parameter, but Windows CE 1.0 does not.

QuickInfo
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Requires version 1.0 or later.
Header: Declared in winuser.h.
Import Library: Use user32.lib.
Unicode: Implemented as Unicode and ANSI versions on Windows NT.

See Also
Window Classes Overview, Window Class Functions, CallWindowProc, GetWindowLong, RegisterClassEx, SetParent, WindowProc, WNDCLASSEX

[FBStudio]

我觉得按照下面的思路可能行得通。
写一个钩子dll,在dll中钩住指定的窗口后再调用SetWindowLong。