如何求得其它程序编辑窗口插字符在屏幕中的位置?

sjd163 2005-06-15 05:50:11
如何求得其它程序编辑窗口插字符在屏幕中的位置?无效回答无分!
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fireseed 2005年06月16日
DWORD dwStartPos, dwEndPos;
SendMessage( hEdit, EM_GETSEL, (WPARAM)&dwStartPos, (LPARAM)&dwStartPos);


就不会去查查MSDN么?



EM_GETSEL Message

--------------------------------------------------------------------------------

The EM_GETSEL message retrieves the starting and ending character positions of the current selection in an edit control. You can send this message to either an edit control or a rich edit control.

Syntax


To send this message, call the SendMessage function as follows.
lResult = SendMessage( // returns LRESULT in lResult (HWND) hWndControl, // handle to destination control (UINT) EM_GETSEL, // message ID (WPARAM) wParam, // = (WPARAM) (LPDWORD) wParam; (LPARAM) lParam // = (LPARAM) (LPDWORD) lParam; );
Parameters

wParam
Pointer to a buffer that receives the starting position of the selection. This parameter can be NULL.
lParam
Pointer to a buffer that receives the position of the first nonselected character after the end of the selection. This parameter can be NULL.
Return Value

The return value is a zero-based value with the starting position of the selection in the low-order word and the position of the first character after the last selected character in the high-order word. If either of these values exceeds 65,535, the return value is –1.
It is better to use the values returned in wParam and lParam because they are full 32-bit values.



Remarks

Rich edit controls: You can also use the EM_EXGETSEL message to retrieve the same information. EM_EXGETSEL also returns starting and ending character positions as 32-bit values.

Rich Edit: Supported in Microsoft® Rich Edit 1.0 and later. For information about the compatibility of rich edit versions with the various system versions, see About Rich Edit Controls.

Message Information

Header Declared in Winuser.h, include Windows.h
Minimum operating systems Windows 95, Windows NT 3.1

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sjd163 2005年06月16日
fireseed(奶油狗【Dream of violin】):
在SendMessage( hEdit, EM_GETSEL, pos1, pos2)
pos1 和 pos2 什么类型如何使用?能给个例子吗?

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fireseed 2005年06月15日
流程:
1. 得到那个窗体中你想要的edit的句柄 hEdit
2. 通过SendMessage( hEdit, EM_GETSEL, pos1, pos2)得到光标在字符串中的位置
3. 通过SendMessage( hEdit, EN_POSFROMCHAR, pos1, 0 );得到光标所在字符在edit客户区中的位置
4. 通过ClientToScreen( hEdit, pt )将光标的客户区坐标转为屏幕坐标
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fireseed 2005年06月15日
用EM_GETSEL
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sjd163 2005年06月15日
如何获得光标在哪个字符上?
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fireseed 2005年06月15日
获得光标在哪个字符上,再调用EN_posfromchar

再根据GetWindowRect()记算得出
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