OpenEuphoria

Re: Re[2]: hWnd of cursor

• Posted by Greg Haberek <g.haberek at comcast.net> Mar 02, 2003
• 645 views

i'll take a copy.. 


----- Original Message ----- 
From: aku saya <akusaya at gmx.net>
Subject: Re[2]: hWnd of cursor



Thanks very much, I was able to implement it.
If someone wants the code, I will send it.
______________________________________________

>> I want to know what is the hWnd of the current typing cursor
>> (only one at a time).
>>
>> Not only in my application, but also outside of it.
>>
>> How to get it?
>>
>> Thanks!
>>

D> The Windows API call you will need is called 'GetGUIThreadInfo'. With this, 
D> you can get the handle of the foreground (focus) control that has the 
D> current caret.

D> Here some details from the Mircosoft SDK...

D> GetGUIThreadInfo
D> The GetGUIThreadInfo function retrieves information about the active window 
D> or a specified graphical user interface (GUI) thread.

D> BOOL GetGUIThreadInfo(
D>   DWORD idThread,       // thread identifier
D>   LPGUITHREADINFO lpgui  // thread information
D> );
D> Parameters
D> idThread [in] Identifies the thread for which information is to be 
D> retrieved. To retrieve this value, use the GetWindowThreadProcessId 
D> function. If this parameter is NULL, the function returns information for 
D> the foreground thread. lpgui [out] Pointer to a GUITHREADINFO structure 
D> that receives information describing the thread. Note that you must set 
D> GUITHREADINFO.cbSize to sizeof(GUITHREADINFO) before calling this function. 
D> Return Values
D> If the function succeeds, the return value is nonzero.

D> If the function fails, the return value is zero. To get extended error 
D> information, call GetLastError.

D> Remarks
D> This function succeeds even if the active window is not owned by the 
D> calling process. If the specified thread does not exist or have an input 
D> queue, the function will fail.

D> This function is useful for retrieving out-of-context information about a 
D> thread. The information retrieved is the same as if an application 
D> retrieved the information about itself.

D> Requirements Windows NT/2000/XP: Included in Windows NT 4.0 SP3 and later.
D>   Windows 95/98/Me: Included in Windows 98 and later.
D>   Header: Declared in Winuser.h; include Windows.h.
D>   Library: Use User32.lib.



D> The GUITHREADINFO structure contains information about a GUI thread.

D> typedef struct tagGUITHREADINFO {
D>     DWORD   cbSize;
D>     DWORD   flags;
D>     HWND    hwndActive;
D>     HWND    hwndFocus;
D>     HWND    hwndCapture;
D>     HWND    hwndMenuOwner;
D>     HWND    hwndMoveSize;
D>     HWND    hwndCaret;
D>     RECT    rcCaret;
D> } GUITHREADINFO, *PGUITHREADINFO;
D> Members
D> cbSize Specifies the size of this structure, in bytes. The caller must set 
D> this to sizeof(GUITHREADINFO). flags Specifies the thread state. This 
D> member can be one or more of the following values. Value Meaning 
D> GUI_16BITTASK Windows XP: Represents the thread's application type. This 
D> bit is set if the thread corresponds to a 16-bit application. 
D> GUI_CARETBLINKING  Represents the caret's blink state. This bit is set if 
D> the caret is visible.  GUI_INMENU  Represents the thread's menu state. This 
D> bit is set if the thread is in menu mode.  GUI_INMOVESIZE  Represents the 
D> thread's move state. This bit is set if the thread is in a move or size 
D> loop.  GUI_POPUPMENUMODE  Represents the thread's pop-up menu state. This 
D> bit is set if the thread has an active pop-up menu.  GUI_SYSTEMMENUMODE  
D> Represents the thread's system menu state. This bit is set if the thread is 
D> in a system menu mode.


D> hwndActive Handle to the active window within the thread. hwndFocus Handle 
D> to the window that has the keyboard focus. hwndCapture Handle to the window 
D> that has captured the mouse. hwndMenuOwner Handle to the window that owns 
D> any active menus. hwndMoveSize Handle to the window in a move or size loop. 
D> hwndCaret Handle to the window that is displaying the caret. rcCaret A RECT 
D> structure that describes the caret's bounding rectangle, in client 
D> coordinates, relative to the window specified by the hwndCaret member.



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