C / C++ / MFC

Re: How to make a splitted frame?

28-Jul-05 0:30

How can I create a simple splitted frame?

if u want to create splitted frame
at the beginning of MFC application wizard select SDI option

and after that at step 5 of 6
select the Base class CView

and create virtual function OnCreateClient() for the class CMainFrame

and intilalize boolean variable at the class and give it false value at hte constructor
after u created it delete all the code of OnCreateClient() function and write this instead

if ( !m_mainSplitter.CreateStatic( this, 1, 2 ) )<br />
{<br />
	MessageBox( "Error setting up m_mainSplitter", "ERROR", MB_OK | MB_ICONERROR );<br />
	return false;<br />
}<br />
// The views for each pane must be created <br />
if ( !m_mainSplitter.CreateView( 0,0,RUNTIME_CLASS(CLeftView),CSize(255, 0), pContext ) )<br />
{<br />
        //CLeftView ur leftview class<br />
	MessageBox( "Error setting up splitter view", "ERROR", MB_OK | MB_ICONERROR );<br />
	return false;<br />
}<br />
if ( !m_mainSplitter.CreateView( 0, 1, RUNTIME_CLASS(CRightView),CSize(0, 0),Context ) )<br />
{<br />
        //CRightViewur rightview class<br />
	MessageBox( "Error setting up splitter view", "ERROR", MB_OK | MB_ICONERROR );<br />
	return false;<br />
}<br />
//change flag to show splitter created<br />
m_bInitSplitter = true;<br />
//return TRUE instead of the parent method since that would<br />
//not show our window<br />
       return true;

MFC programmer

David Crow28-Jul-05 5:24

Re: How to make a splitted frame?

28-Jul-05 5:24

m_fuad67 wrote:
if ( !m_mainSplitter.CreateStatic( this, 1, 2 ) )

You should probably indicate that m_mainSplitter is a CSplitterWnd object.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Olgun28-Jul-05 23:23

Olgun

28-Jul-05 23:23

Thanks a lot for your reply.

Olgun

How do i convert CString from MFC application to String in Win32 application

santoshskulkarni27-Jul-05 20:46

santoshskulkarni

27-Jul-05 20:46

hello all ,
i have some code in MFC which i have to write it in win 32 but i couldnt find a rightway can anybody help me regarding this. My code goes like this.

in MFC code is:
typedef unsigned short mtsChar_T;
.
.
mtsChar_T* pResultText;
.
.
CString res;
for(i=0; i< 100; i++)
{
if((pResultText + i)=='\0')
break;
res =res +(pResultText+i);
}
AfxMessageBox(res);

Now i have to write it in win 32sdk application , iahve tried the same code by just replacing Cstring wirh string but it doesnt complile .plz help me abt this Frown | :(

Santosh

Re: How do i convert CString from MFC application to String in Win32 application

Bob Stanneveld27-Jul-05 21:06

Bob Stanneveld

27-Jul-05 21:06

Hello,

Maybe a std::string[^] or a std::stringstream[^] can be of some help..

If not, you have to use strings of TCHARs (see the tchar.h header). You also have to use a lot of C string functions.

Behind every great black man...
... is the police. - Conspiracy brother

Blog[^]

Re: How do i convert CString from MFC application to String in Win32 application

santoshskulkarni27-Jul-05 22:14

santoshskulkarni

27-Jul-05 22:14

Can you please elaborate more on this Bob?

Re: How do i convert CString from MFC application to String in Win32 application

Bob Stanneveld27-Jul-05 22:55

Bob Stanneveld

27-Jul-05 22:55

Hello,

See the following code examples and see the difference between the CRT and the STL:

// example using the STL and streams
double dValue = 99.9;
std::stringstream sstr;
sstr << _T("This is some string with a double: ") << dValue << std::endl;

// example using the CTR
double dValue = 99.9;
TCHAR szBuf[1024] = {0};
_sntprintf(szBuf, 1023, _T("This is some string with a double: %f", dValue);

Some differences of the STL compared to the CRT are:
<list>

You don't have to use buffer magic, the STL does it for you

You don't have to use range checking as much as with the CRT

The syntax looks more clean
D'Oh! | :doh:

I remember now a nice CString replacement written by another CPian: CStdString[^]. You can use this class instead of the MFC CString without too much hassle. Big Grin | :-D

Behind every great black man...
... is the police. - Conspiracy brother

Blog[^]

Re: How do i convert CString from MFC application to String in Win32 application

santoshskulkarni28-Jul-05 0:58

santoshskulkarni

28-Jul-05 0:58

Thanks Bob, it will really help me .

Re: How do i convert CString from MFC application to String in Win32 application

John R. Shaw28-Jul-05 5:30

John R. Shaw

28-Jul-05 5:30

Note: The define UNICODE has no effect on standared streams or strings. Therefore, the _T() does not realy apply unless you do one of the following:

---------------------------------------------
#ifdef UNICODE
std::wstringstream sstr;sstr << _T("This is some string with a double: ") << dValue << std::endl;
#else
std::stringstream sstr;sstr << _T("This is some string with a double: ") << dValue << std::endl;
#endif
---------------------------------------------
// OR
#ifdef UNICODE
std::wstringstream sstr;sstr << L"This is some string with a double: " << dValue << std::endl;
#else
std::stringstream sstr;sstr << "This is some string with a double: " << dValue << std::endl;
#endif
---------------------------------------------
// OR much simpler
std::basic_stringstream<TCHAR> sstr;sstr << _T("This is some string with a double: ") << dValue << std::endl;
---------------------------------------------

INTP
"The more help VB provides VB programmers, the more miserable your life as a C++ programmer becomes."
Andrew W. Troelsen

CView and Dialog

Mohammed F. Salem27-Jul-05 20:35

27-Jul-05 20:35

Hi I have a program with MFC that include Two panes
left pane for TreView and Right pane for List View
and there is icon at toolbar show me Dialog

after inserting data at dialog the TreeView must do refresh for data that came from database

how could i exchange data between the TreeView and Dialog(not FormView)??

MFC programmer

Cool Ju27-Jul-05 21:18

Cool Ju

27-Jul-05 21:18

if u r reading the database in treeview, U can send a user defined message to the treeview from dialog to refresh it by reading the updated database .

Cool Ju Cool | :cool:

Dont forget to vote Smile | :)

Mohammed F. Salem27-Jul-05 22:22

27-Jul-05 22:22

U can send a user defined message to the treeview from dialog

this code i wrote at LeftView.cpp(TreeView):

#define WM_REFRESHTREE (WM_APP)<br />
<br />
BEGIN_MESSAGE_MAP(CLeftView, CTreeView)<br />
	//{{AFX_MSG_MAP(CLeftView)<br />
	//}}AFX_MSG_MAP<br />
	ON_MESSAGE(WM_REFRESHTREE,AddData) <br />
END_MESSAGE_MAP()<br />
<br />
// AddData used to insert database recordes and the treeview<br />
<br />
<br />
void CLeftView::AddData()<br />
{<br />
	if(db.IsOpen()==false)<br />
		db.Open();<br />
	db.MoveFirst();<br />
	GetTreeCtrl().DeleteAllItems();<br />
	while(db.IsEOF()==false)<br />
	{<br />
		GetTreeCtrl().InsertItem(db.m_name);<br />
		db.MoveNext();<br />
	}<br />
}

from MyDlg.cpp (Dialog):

void CMyDlg::OnButton1() <br />
{<br />
	CLeftView *obj;<br />
	obj->PostMessage(WM_REFRESHTREE);<br />
}

there is error appeared after writing code so it can't work true

so could i continue my work?

MFC programmer

Cool Ju27-Jul-05 23:09

Cool Ju

27-Jul-05 23:09

It will definetly work...

Dont define ur message as application message (WM_APP), make it WM_USER + ..(some number). define it in both dialog as well as view header files..

Can u list out the errors..

Cool Ju Cool | :cool:

Dont forget to vote Smile | :)

Mohammed F. Salem27-Jul-05 23:58

27-Jul-05 23:58

Hi
i have done as u said
but there is error still appeared

and the error message told me at the memory instruction

and u must know that i have put the code of my defined windows message at the TreeView implementation file

and I posted the message from the dialog button code

I need qick solve for this problem

MFC programmer

Satishkumar.B28-Jul-05 1:58

Satishkumar.B

28-Jul-05 1:58

I doubt the function declaration. A crash is expected when you send a message to a window that doesnt handle it. See below MSDN quote:

User Defined Windows Messages

User-defined messages may be included in a message map by using the ON_MESSAGE macro. This macro accepts a message number and a member function of the form:

// inside the class declaration
afx_msg LRESULT OnMyMessage(WPARAM wParam, LPARAM lParam);

For example:
#define WM_MYMESSAGE (WM_USER + 100)

BEGIN_MESSAGE_MAP(CMyWnd, CMyParentWndClass)
ON_MESSAGE(WM_MYMESSAGE, OnMyMessage)
END_MESSAGE_MAP()

WPARAM and LPARAM are required in the function declaration even though you dont use it.

Satish

Mohammed F. Salem28-Jul-05 2:32

28-Jul-05 2:32

i tried many ways and the same error

so i have uploaded the project that inculdes:
ODBC database and the connection registration where attached

if u want to test the probelm
click on the back button at the toolbar then try to test

http://www.websamba.com/mohammed_fuad[^]

and after any one solved the probelm u can send me the new code at

m_fuad67@hotmail.com

plz help me quick

MFC programmer

David Crow28-Jul-05 5:34

28-Jul-05 5:34

Satishkumar.B wrote:
A crash is expected when you send a message to a window that doesnt handle it.

Huh? A crash should never be expected, especially if a window receives a message that it does not handle. If a window receives a message that it does not handle, DefWindowProc() or DefDlgProc() just sends it on.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

David Crow28-Jul-05 5:31

28-Jul-05 5:31

Cool Ju wrote:
Dont define ur message as application message (WM_APP), make it WM_USER

Not recommended. While older books and tutorials used WM_USER, these symbols caused problems by conflicting with messages that Microsoft was using. Use WM_APP instead.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

David Crow28-Jul-05 5:37

28-Jul-05 5:37

m_fuad67 wrote:
how could i exchange data between the TreeView and Dialog(not FormView)??

I presume some method in the tree view class is in charge of displaying the dialog. Correct? If so, then you'll want something like:

void CMyTreeView::OnButtonClick()
{
    CMyDialog dlg;
    if (dlg.DoModal() == IDOK)
    {
        // access member variables of <code>dlg</code> object here
    }
}

Make sense?

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Mohammed F. Salem28-Jul-05 7:13

28-Jul-05 7:13

Dear all
there is no true solution

no one can solve this problem?????? ohhhh nooooo

David Crow28-Jul-05 7:23

28-Jul-05 7:23

m_fuad67 wrote:
there is no true solution

no one can solve this problem...

I guess I'll have to go back and change all of my working code to longer work. I've done it so many times, it might take a while, but if you say there is no solution, well...

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Mohammed F. Salem28-Jul-05 9:30

28-Jul-05 9:30

Hi
i tried it so many times and many ways with other applications

but the problem concentrated between left pane (TreeView) and the dialog (not FormView)

plz any one could help me

i'm at big trouble

MFC programmer

David Crow28-Jul-05 9:41

28-Jul-05 9:41

I thought the code snippet I provided was sufficient. As it is apparently not, please show the code you are using when the button is clicked to display the dialog box.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Mohammed F. Salem28-Jul-05 9:54