C / C++ / MFC

30-Apr-04 8:25

Hello..

I'm reading a book that describes how I can use build in wizards in Visual Studio 6.0 to add message handlers. It tells me to right click the class, and click add windows message handler.. But i'm using VC7.0.. Where can I find this functionallity? Specifically I want to add an OnCreate handler.

Jason Henderson30-Apr-04 9:18

Jason Henderson

30-Apr-04 9:18

A message handler is just another function.

In your header file add this declaration:
afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);

In your implementation file where it says,
BEGIN_MESSAGE_MAP(CYourWindow, CWnd)
this is where you tell it what method is going to handle which message.
Add this ON_WM_CREATE() somewhere in the MESSAGE_MAP.

Then add your function to the implementation file like this:

int CYourWindow::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
   // your code goes here
}

BTW, I'm assuming MFC is used. Otherwise you'll have this huge switch statement to modify.

"We have done so much in the last 2 years, and it doesn't happen by standing around with your finger in your ear, hoping everyone thinks that that's nice." - Donald Rumsfeld

Jason Henderson
blog

pie30-Apr-04 9:26

30-Apr-04 9:26

Yes, but I was getting tierd of writing code like that and wanted the wizard to do it for me. I just can't seem to find the "Add Message Handler"-wizard in VC 7.0.

Jason Henderson30-Apr-04 9:29

Jason Henderson

30-Apr-04 9:29

If its in a dialog, you can right click on the control.

"We have done so much in the last 2 years, and it doesn't happen by standing around with your finger in your ear, hoping everyone thinks that that's nice." - Donald Rumsfeld

Jason Henderson
blog

pie30-Apr-04 9:35

30-Apr-04 9:35

But it's not. My book tells me to "Right-click CMainFrame in the ClassView window, select Add Windows Message Handler, double-click WM_CREATE, and click Edit Existing. You'll find yourself in the empty message handler body, poised to type in the finished code. ClassWizard has already done everything else, including adding an ON_WM_CREATE entry to the message map."

But there's no "add windows message handler" in VC 7.0(at least I can't spot it)

Jason Henderson30-Apr-04 9:37

Jason Henderson

30-Apr-04 9:37

You can also go to class view, click on the class, right-click and go to properties. Then click on the messages button and add your handler.

"We have done so much in the last 2 years, and it doesn't happen by standing around with your finger in your ear, hoping everyone thinks that that's nice." - Donald Rumsfeld

Jason Henderson
blog

pie30-Apr-04 9:44

30-Apr-04 9:44

Aah, thank you.. Exactly what I was looking for!

Deleting Start-Menu Folder

l a u r e n30-Apr-04 19:45

l a u r e n

30-Apr-04 19:45

join the freaking club
why oh why did they get rid of class wizard???
Mad | :mad:

"there is no spoon"
biz stuff about me

Brad Bruce30-Apr-04 8:06

Brad Bruce

30-Apr-04 8:06

In MFC (VC6.0) how do I remove a start-menu folder?

I can delete all of the items, but however I try to delete the folder (_rmdir, SHFileOperation) I get a permission denied error.

Any suggestions? It looks like the shell keeps a lock on the folder.

Re: Deleting Start-Menu Folder

David Crow30-Apr-04 8:15

Re: Deleting Start-Menu Folder

30-Apr-04 8:15

I'm curious why you'd want to remove the Start Menu folder. Trying it yields a "Start Menu is a Windows system folder and is required for Windows to run properly. It cannot be deleted." message.

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

Brad Bruce30-Apr-04 13:02

Brad Bruce

30-Apr-04 13:02

Bad wording on my part. A menu ON the start menu. We have an application that re-installed itself somewhere different during an update leaving people with a bad shortcut on the start menu.

I've worked out a program to delete all of the .lnk files pointing to the old directory, but was having trouble deleting the directory.

Since my original post I've realized that the problem was that I was trying to remove the directory while a FindFile was still pending on the directory. Once I moved the delete routine to another part of the program all worked fine.

Thanks

localization with satellite dll's

Konrad Windszus30-Apr-04 7:55

Konrad Windszus

30-Apr-04 7:55

How can I change the language at run-time. I use resource-only dll's for the different languages and set it in the MFC method CWinApp::InitInstance with AfxSetResourceHandle before the MainFrame is loaded. How can I do this, when the MainFrame is already loaded. What do I have to do besides the AfxSetResourceHandle, that even the Menu and all the dialogs are now in the new language? Thanks for any help.

Konrad

List Control

aman200630-Apr-04 7:34

30-Apr-04 7:34

Hi In one column of List Control i want to show the image but not the values, but with my code(pasted below) it is showing both the image and values. Can any body help me how can i achieve this.But i need to associate the values also because i am doing sorting also on that column

//Set up Record Status
Holder = pRecordSet->GetCollect("RecordStatus");
status = Holder.iVal;
temp.Format("%d",status);
m_RecordList->SetItemText(iNew,5,temp);

// setup record status
lvI.mask=LVIF_IMAGE ;
lvI.iItem= iNew;
lvI.iSubItem=5;

if(status == eCIT_STATUS_COMPLETE)
lvI.iImage = 1;
else if(status == eCIT_STATUS_VOID)
lvI.iImage = 3;
else
lvI.iImage = 0;

m_RecordList->SetItem(&lvI);

Thanks
Shailesh

David Crow30-Apr-04 7:59

30-Apr-04 7:59

aman2006 wrote:
i want to show the image but not the values

Isn't the call to SetItemText() what's showing the value?

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

aman200630-Apr-04 8:06

30-Apr-04 8:06

SetItemText() is showing the value but how can i associate a value with the image so that i can sort by clicking on header. But it is showing both values and Image.

Thanks
shailesh

David Crow30-Apr-04 8:12

30-Apr-04 8:12

aman2006 wrote:
how can i associate a value with the image...

Call SetItemData().

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

aman200630-Apr-04 8:33

30-Apr-04 8:33

Hey this is the situation now but it is not sorting when i click on the header column.

//Set up Record Status
Holder = pRecordSet->GetCollect("RecordStatus");
status = Holder.iVal;
m_RecordList->SetItemData(iNew,status);

// setup record status
lvI.mask=LVIF_IMAGE ;
lvI.iItem= iNew;
lvI.iSubItem=5;

if(status == eCIT_STATUS_COMPLETE)
lvI.iImage = 1;
else if(status == eCIT_STATUS_VOID)
lvI.iImage = 3;
else
lvI.iImage = 0;

m_RecordList->SetItem(&lvI);

Any Suggestion
Thanks

David Crow30-Apr-04 8:41

30-Apr-04 8:41

aman2006 wrote:
...it is not sorting when i click on the header column

And what does the handler code for that look like?

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

aman200630-Apr-04 8:45

30-Apr-04 8:45

David this the full code
while(!pRecordSet->EndOfFile)
{

// Insert the first item
lvI.mask = LVIF_TEXT| LVIF_PARAM | LVIF_STATE;
lvI.state = 0;
lvI.stateMask = 0;
lvI.iItem = counter;

lvI.iSubItem = 0;
Holder = pRecordSet->GetCollect("CitationID");
if(Holder.vt!=VT_NULL)
{
temp = (char*)_bstr_t(Holder);
lvI.pszText = (LPTSTR)(LPCTSTR)(temp);
}
else
lvI.pszText = _T("");

//lvI.pszText = _T("");
lvI.lParam = counter;
int iNew = m_RecordList->InsertItem(&lvI);

Holder = pRecordSet->GetCollect("CitationNo");
if(Holder.vt!=VT_NULL)
{
temp = (char*)_bstr_t(Holder);
lvI.pszText = (LPTSTR)(LPCTSTR)(temp);
}
else
lvI.pszText = _T("");

m_RecordList->SetItemText(iNew,1,temp);
//Citation date
Holder = pRecordSet->GetCollect("CitationDate");
if(Holder.vt!=VT_NULL)
{
temp = (char*)_bstr_t(Holder);
lvI.pszText = (LPTSTR)(LPCTSTR)(temp);
}
else
lvI.pszText = _T("");

m_RecordList->SetItemText(iNew,2,temp);

//Citation Time
Holder = pRecordSet->GetCollect("CitationTime");
if(Holder.vt!=VT_NULL)
{
temp = (char*)_bstr_t(Holder);
lvI.pszText = (LPTSTR)(LPCTSTR)(temp);
}
else
lvI.pszText = _T("");

m_RecordList->SetItemText(iNew,3,temp);

//Subject First Name

strFName.Empty();
Holder = pRecordSet->GetCollect("FirstName");
if(Holder.vt!=VT_NULL)
strFName = (char*)_bstr_t(Holder);
else
strFName = _T("");

//Subject Last Name
Holder = pRecordSet->GetCollect("LastName");
if(Holder.vt!=VT_NULL)
{
temp = (char*)_bstr_t(Holder);
// lvI.pszText = (LPTSTR)(LPCTSTR)(temp);
}
else
temp = _T("");

strFName += _T(" ") + temp;
lvI.pszText = (LPTSTR)(LPCTSTR)(strFName);
m_RecordList->SetItemText(iNew,4,strFName);

//Set up Record Status
Holder = pRecordSet->GetCollect("RecordStatus");
status = Holder.iVal;
m_RecordList->SetItemData(iNew,status);

// setup record status
lvI.mask=LVIF_IMAGE;
lvI.iItem= iNew;
lvI.iSubItem=5;

if(status == eCIT_STATUS_COMPLETE)
lvI.iImage = 1;
else if(status == eCIT_STATUS_VOID)
lvI.iImage = 3;
else
lvI.iImage = 0;

m_RecordList->SetItem(&lvI);

//Set up Sync Status
Holder = pRecordSet->GetCollect("IsSynchronized");
status = Holder.iVal;
temp.Format("%d",status);
m_RecordList->SetItemText(iNew,6,temp);

// setup record status
lvI.mask=LVIF_IMAGE;
lvI.iItem= iNew;
lvI.iSubItem=6;

if(status == eCIT_STATUS_SYNCED)
lvI.iImage = 2;
else
lvI.iImage = -1;

m_RecordList->SetItem(&lvI);

counter++;
pRecordSet->MoveNext();
}

Thanks
shailesh

David Crow30-Apr-04 9:50

30-Apr-04 9:50

This is the code that populates the list control. I wanted to see the code that handles the clicking of the column heading, and the sorting-compare routine.

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

aman200630-Apr-04 10:42

30-Apr-04 10:42

Here u go:

typedef struct _tagSORTDATA
{
INT isortSubItem;
CListCtrl *m_pointer;
INT iUPDOWN;
BOOL StringComp;
} SORTDATA;
enum{
eSORT_UP = 1,
eSORT_DOWN
};
void CEditForm::OnColumnclickHistoryList(NMHDR* pNMHDR, LRESULT* pResult)
{
NM_LISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR;
static WORD nSort;
SORTDATA sortData;

m_RecordList =(CListCtrl*)GetDlgItem(IDC_HISTORY_LIST);

if(nSort == eSORT_UP)
nSort = eSORT_DOWN;
else
nSort = eSORT_UP;

sortData.isortSubItem = pNMListView->iSubItem;
sortData.iUPDOWN = nSort;
sortData.m_pointer = (CListCtrl*)m_RecordList;
sortData.StringComp = TRUE;
if(m_RecordList->SortItems(ListViewCompProc, (DWORD)(LPARAM)&sortData) != TRUE)
AfxMessageBox(_T("Error"));

*pResult = 0;
}

int CALLBACK CEditForm::ListViewCompProc(LPARAM lp1, LPARAM lp2, LPARAM lp3)
{
static LVFINDINFO lvf;
static INT nItem1, nItem2;
CString buf1, buf2;

SORTDATA *lpsd;

lpsd = (SORTDATA *)lp3;
CListCtrl *m_RecordList = (CListCtrl*)lpsd->m_pointer;

lvf.flags = LVFI_PARAM;
lvf.lParam = lp1;
// nItem1 = ListView_FindItem(lpsd->hwndList, -1, &lvf);
nItem1 = m_RecordList->FindItem(&lvf);

lvf.lParam = lp2;
//nItem2 = ListView_FindItem(lpsd->hwndList, -1, &lvf);
nItem2 = m_RecordList->FindItem(&lvf);

//ListView_GetItemText(lpsd->hwndList, nItem1, lpsd->isortSubItem, buf1, sizeof(buf1));
buf1 = m_RecordList->GetItemText(nItem1,lpsd->isortSubItem);
//ListView_GetItemText(lpsd->hwndList, nItem2, lpsd->isortSubItem, buf2, sizeof(buf2));
buf2 = m_RecordList->GetItemText(nItem2,lpsd->isortSubItem);

if (lpsd->isortSubItem != 9)
{
// string comparision
if (lpsd->iUPDOWN == eSORT_UP)
{
return(buf1.Compare(buf2));
}
else
{
return(buf1.Compare(buf2) * -1);
}
}
else
{
// digit comparision
if (lpsd->iUPDOWN == eSORT_UP)
{
if (_ttoi(buf1) > _ttoi(buf2))
return 1;
else if (_ttoi(buf1) == _ttoi(buf2))
return 0;
else
return -1;
}
else
{
if (_ttoi(buf1) > _ttoi(buf2))
return -1;
else if (_ttoi(buf1) == _ttoi(buf2))
return 0;
else
return 1;
}
}
return 0;
}

David Crow30-Apr-04 10:53