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Wow. Another API I have never heard of. 
How do you find this stuff?
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I am experimenting with different releases of OpenCV and would like to document command line options.
Is there a simple way to see / print all command line options in use in MFC workspace ( Project _ Settings)?
Thanks for reading.
Vaclav
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The simplest way is to go to Project | Settings | C/C++ and copy/paste the text box at the bottom of that tab, "Project Options". You could also probably find this info in the project .dsp file.
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Thanks, it is in *.dsp file
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Hi all,
i m using ListCtrl with Checkbox option.
i m popup a message on double click of list item and i want the message not pop up on double click on ckeck box of this item .
please tell me how can i do this.
thanks in advance.
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The solution to this is the NM_DBLCLK notification message; for more info see here: http://msdn.microsoft.com/en-us/library/bb774867%28v=vs.85%29.aspx[^]
Here is a code snippet:
void MyDlg::OnDblClick(NMHDR* pNMHDR, LRESULT* pResult)
{
LPNMITEMACTIVATE pNMIA = reinterpret_cast<LPNMITEMACTIVATE>(pNMHDR);
int nItem = -1;
int nSubItem = -1;
if (pNMIA)
{
nItem = pNMIA->iItem;
nSubItem = pNMIA->iSubItem;
}
if (nItem >= 0 && nSubItem >= 0)
{
CString strText = m_List.GetItemText(nItem, nSubItem);
TRACE(_T("OnDblClick at (%d,%d): '%s'"), nItem, nSubItem, strText);
}
*pResult = 0;
}
The message map entry looks like:
ON_NOTIFY(NM_DBLCLK, IDC_LIST, OnDblClick)
This gives you the sub-item of the click, and from that you can tell whether the checkbox column was clicked.
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i am asking how can skip to pop up the message box on double click on check box in list ctrl.
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Le@rner wrote: i am asking how can skip to pop up the message box on double click on check box in list ctrl.
And I just told you. Did you even try my code?
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Hans Dietrich wrote: Le@rner wrote:
i am asking how can skip to pop up the message box on double click on check box in list ctrl.
And I just told you. Did you even try my code?
yes here message popu on double click of checkbox also
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You can look at ptAction in NMITEMACTIVATE.
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thanks now i using this and it works.
please check its correct way to do this or not
LPNMITEMACTIVATE pia = (LPNMITEMACTIVATE)pNMHDR;
CPoint point(pia->ptAction);
UINT uFlags;
int nItem = m_List.HitTest(point, &uFlags);
if (uFlags!=8)
{
AfxMessageBox("Double Click");
}
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Why not just use the item and subitem fields to discover whether it's the checkbox column as Hans explained in his initial answer?
I must get a clever new signature for 2011.
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For that, is there any separate column for check boxes in list control with LVS_EX_CHECKBOXES style? Please correct me if i am wrong.
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I'm not sure, I (foolishly) assumed the checkbox could be added to any column. My bad 
I must get a clever new signature for 2011.
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Its ok. No separate column for check box, assuming that the questioner is using List control with LVS_EX_CHECKBOXES style. 
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Thanks, obviously a feature I need to check out at the earliest opportunity.
I must get a clever new signature for 2011.
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Use CListCtrl::GetItemRect and ptAction member of LPNMITEMACTIVATE structure.
void MyDlg::OnDblClick(NMHDR* pNMHDR, LRESULT* pResult)
{
LPNMITEMACTIVATE pNMIA = reinterpret_cast<LPNMITEMACTIVATE>(pNMHDR);
int nItem = -1;
int nSubItem = -1;
if (pNMIA)
{
nItem = pNMIA->iItem;
nSubItem = pNMIA->iSubItem;
}
if (nItem >= 0 && nSubItem >= 0)
{
CRect rect;
m_list.GetItemRect(nItem, &rect, LVIR_LABEL );
if(pNMIA->ptAction.x < rect.left)
{
MessageBox("Double Clicked on CheckBox");
}
}
*pResult = 0;
}
Another alternative is CListCtrl::HitTest() function.
modified on Monday, February 28, 2011 6:56 AM
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Hi everyone ! Can you give an help hand , please ? I need an source code of GetComboBoxInfo function from here[^]
Why ? Because I use that function in a project that I need compile on Windows NT SP6 , and there I don't have this function ... thank you very much .
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Unless someone else has something to say, you're out of luck.
Interactions like this with controls are all done through messages, like SetWindowText() is an alias for PostMessage(WM_SETTEXT), and it appears that GetComboBoxInfo() is an alias for CB_GETCOMBOBOXINFO[^], which as that MSDN page says is only implemented on Windows XP and later.
If this query message is not supported by the control on your platform then you are going to have a hard time getting the internal state.
Not sure if it will work, and if it will it is probably not a good idea, but you might be able to update the common control library from something like Windows XP, which should have all features of NT, plus more by copying and pasting.
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Then perhaps you give me an alternative for this issue :
I need to have ComboBoxInfo.hwndList handle for the follow function :
void CComboBoxExt::PreSubclassWindow()
{
CComboBox::PreSubclassWindow();
COMBOBOXINFO ComboBoxInfo;
ComboBoxInfo.cbSize = sizeof(ComboBoxInfo);
GetComboBoxInfo(m_hWnd,&ComboBoxInfo);
m_List.SubclassWindow(ComboBoxInfo.hwndList);
SetProp(ComboBoxInfo.hwndList, WndPropertyComboBoxEx, this);
fNextListProc = (WNDPROC)SetWindowLong(ComboBoxInfo.hwndList, GWL_WNDPROC, (LONG)WinProcForList);
}
and implementation of WinProcForList is here :
LRESULT CComboBoxExt::WinProcForList(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
CComboBoxExt* pInstance = (CComboBoxExt*)GetProp(hWnd,WndPropertyComboBoxEx);
ASSERT(pInstance != NULL);
if(msg == LB_FINDSTRING)
{
TRACE("Replacing LB_FINDSTRING with LB_FINDSTRINGEXACT when looking for: \"%s\"\n", (LPCTSTR)lParam);
msg = LB_FINDSTRINGEXACT;
}
return CallWindowProc(pInstance->fNextListProc, hWnd, msg, wParam, lParam);
}
any help or hint I will very appreciated !
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In fact , I try to deturn LB_FINDSTRING from dropdown list into LB_FINDSTRINGEXACT , and there must be an solution that function for Windows NT ... 
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i have two root object,each object contains many members but i take up only one string member(m_strTitle) as reference to merge two object and it also contains one vector (holds pointer of object ) to hold all children of object ..... any best algorithm other than linear comparison ?
example:
two objects are
m_objSource ( pointer of classObj )
m_objGuest (pointer of classObj )
structure of classObj is
{
CString m_strTitle;
...............
.............
vector <classobj*> m_vectChildFolder;
}
modified on Monday, February 28, 2011 2:13 AM
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