This article was previously published under Q147842
Note Microsoft Visual C++ .NET 2002 and Microsoft Visual C++ .NET 2003 support both the managed code model that is provided by the Microsoft .NET Framework and the unmanaged native Microsoft Windows code model. The information in this article applies only to unmanaged Visual C++ code.
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SUMMARY
By design, a left-mouse click on a
column other than the first column of a List View control when the control is
in report view will not select the first column of that row. This article
presents a way to detect the mouse click, and highlight the first column of the
row where the mouse was clicked.
The List View control will send a NM_CLICK notification code to
its parent window whenever the user has clicked the left mouse button within
its client area. Below are the necessary steps to intercept this notification
code in the control itself (instead of the parent window) and to highlight the
first column of the row that is being clicked:
1.
Open Solution Explorer. On the Project menu, click Add
Class.
2.
In the Add Class dialog box, double-click the MFC Class in
the Templates pane.
3.
In the MFC Class Wizard, type a class name of CMyListCtrl
and a base class of CListCtrl, and then click Finish to add the new class to
your project.
4.
Add a message event handler for the NM_CLICK message to the
CMyListCtrl class:
a.
In the Class View window, click to select CMyListCtrl,
open the Properties window, and then click Messages.
b.
In the Properties window, click to select the =NM_CLICK
entry.
c.
Click to select the drop-down list that results, and
then add the OnNMClick handler to your class. The following code is generated
in the CMyListCtrl class:
// In the .h file of CMyListCtrl:
class CMyListCtrl : public CListCtrl
{
...
protected:
DECLARE_MESSAGE_MAP()
public:
afx_msg void OnClickOnNMClick(NMHDR* pNMHDR, LRESULT* pResult);
};
// In the .cpp file of CMyListCtrl:
BEGIN_MESSAGE_MAP(CMyListCtrl, CListCtrl)
...
ON_NOTIFY_REFLECT(NM_CLICK, OnClickOnNMClick)
END_MESSAGE_MAP()
void CMyListCtrl::OnClickOnNMClick(NMHDR* pNMHDR, LRESULT* pResult)
{
// TODO: Add your control notification handler code here
*pResult = 0;
}
5.
Modify the CMyListCtrl::OnClick() function to perform the
tasks in the sample code below.
void CMyListCtrl::OnClickOnNMClick(NMHDR* pNMHDR, LRESULT* pResult)
{
// Get the current mouse location and convert it to client
// coordinates.
DWORD pos = GetMessagePos();
CPoint pt(LOWORD(pos), HIWORD(pos));
ScreenToClient(&pt);
// Get indexes of the first and last visible items in listview
// control.
int index = GetTopIndex();
int last_visible_index = index + GetCountPerPage();
if (last_visible_index > GetItemCount())
last_visible_index = GetItemCount();
// Loop until number visible items has been reached.
while (index <= last_visible_index)
{
// Get the bounding rectangle of an item. If the mouse
// location is within the bounding rectangle of the item,
// you know you have found the item that was being clicked.
CRect r;
GetItemRect(index, &r, LVIR_BOUNDS);
if (r.PtInRect(pt))
{
UINT flag = LVIS_SELECTED | LVIS_FOCUSED;
SetItemState(index, flag, flag);
break;
}
// Get the next item in listview control.
index++;
}
*pResult = 0;
}
By design, a List View control in a report view will only
highlight the first column of a row.
For more information about how to select an entire row, click the following article number to view the article in the Microsoft Knowledge Base:
131788 (http://support.microsoft.com/kb/131788/)
OdListVw.exe highlights entire row in a ListView control
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