| This article will provide a source program to implement enumeration of windows in the treectrl format in a dialog box. This is the header file // Winlist. h: header file
// //////////////////////////////////////// ///////////////////////////////////// // Cwinlist Dialog Class cwinlist: Public cdialog
{
// Construction
Public:
Hwnd m_hselected;
Cwinlist (cwnd * pparent = NULL); // standard Constructor
Static bool callback enumwindowsproc (hwnd, lparam );
Static bool callback enumchildproc (hwnd, lparam );
Void builttree (hwnd ); // Dialog data
// {Afx_data (cwinlist)
Enum {IDD = id_winlist };
Ctreectrl m_tree;
//} Afx_data // Overrides
// Classwizard generated virtual function overrides
// {Afx_virtual (cwinlist)
Public:
Virtual bool destroywindow ();
Protected:
Virtual void dodataexchange (cdataexchange * PDX); // DDX/DDV
Support
//} Afx_virtual // Implementation
Protected:
Void drawflash (hwnd );
Void refresh (); // Generated message map Functions
// {Afx_msg (cwinlist)
Virtual bool oninitdialog ();
Afx_msg void onrefresh ();
Afx_msg void onselchangedtree (nmhdr * pnmhdr, lresult * presult );
//} Afx_msg
Declare_message_map ()
PRIVATE:
Cfont treefont;
TV _insertstruct treeitem;
Int rootpt;
Htreeitem rootarray [10];
}; The following is the implementation file // Winlist. cpp: implementation file
// # Include "stdafx. H"
# Include "MFC. H"
# Include "winlist. H"
# Include "mfcapi. H" # Ifdef _ debug
# Define new debug_new
# UNDEF this_file
Static char this_file [] = _ file __;
# Endif //////////////////////////////////////// ///////////////////////////////////// // Cwinlist Dialog Cwinlist: cwinlist (cwnd * pparent/* = NULL */)
: Cdialog (cwinlist: IDD, pparent)
{
// {Afx_data_init (cwinlist)
// Note: The classwizard will add member Initialization
Here
//} Afx_data_init
} Void cwinlist: dodataexchange (cdataexchange * PDX)
{
Cdialog: dodataexchange (PDX );
// {Afx_data_map (cwinlist)
Ddx_control (PDX, idtree, m_tree );
//} Afx_data_map
} Begin_message_map (cwinlist, cdialog)
// {Afx_msg_map (cwinlist)
On_bn_clicked (idrefresh, onrefresh)
On_notify (tvn_selchanged, idtree, onselchangedtree)
//} Afx_msg_map
End_message_map () //////////////////////////////////////// ///////////////////////////////////// // Cwinlist message handlers Static cdwordarray winarray;
Static unsigned long level;
Static int ignore [10];
Static hwnd hprevwnd; Bool callback cwinlist: enumchildproc (hwnd, lparam)
{
Ignore [level] ++;
If (ignore [LEVEL + 1]) Ignore [LEVEL + 1] --;
Else
{Winarray. Add (unsigned long) (level <16) | (unsigned
Long) hwnd ));
Level ++; ignore [LEVEL + 1] = 0;
Enumchildwindows (hwnd, enumchildproc, (long) 0 );
Level --;
} Return true;
} Bool callback cwinlist: enumwindowsproc (hwnd, lparam)
{
Winarray. Add (unsigned long) hwnd );
Level = 1; ignore [LEVEL + 1] = 0;
Enumchildwindows (hwnd, enumchildproc, (long) 0 );
Return true;
} Void cwinlist: builttree (hwnd)
{Char temp [90];
Char text [50];
Char name [20]; Treeitem. hparent = rootarray [rootpt]; : Getwindowtext (hwnd, text, 50 );
: Getclassname (hwnd, name, 20 );
Sprintf (temp, "[% 04x]: {% s }:% s", hwnd, name, text );
Treeitem. item. psztext = temp;
Treeitem. item. lparam = (unsigned long) hwnd;
Htreeitem tempitem = m_tree.insertitem (& treeitem );
Rootarray [rootpt + 1] = tempitem;
} Void cwinlist: drawflash (hwnd)
{
HDC;
Rect RC;
Hpen; : Getwindowrect (hwnd, & rc );
HDC =: getwindowdc (hwnd );
: Setrop2 (HDC, r2_not ); Hpen =: createpen (ps_insideframe, 5 * getsystemmetrics (sm_cxborder), RGB (255, 0, 0 ))
;
: SelectObject (HDC, Hpen );
: SelectObject (HDC, getstockobject (null_brush ));
: Rectangle (HDC, RC. right-rc.left, RC. bottom-rc.top );
: Releasedc (hwnd, HDC );
: Deleteobject (Hpen );
} Void cwinlist: refresh ()
{Rootarray [0] = tvi_root;
Rootpt = 0; Treeitem. hinsertafter = tvi_last;
Treeitem. item. Mask = tvif_text | tvif_param;
Winarray. removeall ();
M_tree.setfont (& treefont );
M_tree.deleteallitems ();
Level = 0;
For (Int J = 0; j <10; j ++) Ignore [J] = 0;
Enumwindows (enumwindowsproc, (long) 0 ); For (INT I = 0; I/TD>
{Rootpt = (INT) (winarray [I] & 0xffff0000)> 16 );
Builttree (hwnd) (winarray [I] & 0x0000ffff ));
}
} Bool cwinlist: oninitdialog ()
{
Cdialog: oninitdialog (); // Todo: add extra initialization here
M_hselected = NULL;
Hprevwnd = NULL;
Refresh ();
Return true; // return true unless you set the focus to a control
// Exception: OCX property pages shold return false
} Void cwinlist: onrefresh ()
{
// Todo: add your control notification handler code here
Refresh ();
} Void cwinlist: onselchangedtree (nmhdr * pnmhdr, lresult * presult)
{
Nm_treeview * pnmtreeview = (nm_treeview *) pnmhdr;
// Todo: add your control notification handler code here Hwnd = (hwnd) pnmtreeview-> itemnew. lparam;
M_hselected = hwnd;
If (hprevwnd) drawflash (hprevwnd );
Hprevwnd = hwnd;
Drawflash (hwnd ); * Presult = 0;
} Bool cwinlist: destroywindow ()
{
// Todo: add your specialized code here and/or call the base class
If (hprevwnd) drawflash (hprevwnd );
Return cdialog: destroywindow ();
} //////////////////////////////////////// ///////////////////////////////////// // DLL export interface Extern "C"
Hwnd far Pascal export searchwindow ()
{
Cwinlist winlist;
If (winlist. domodal () = idok)
Return winlist. m_hselected;
Else
Return (hwnd) NULL;
} |
