C++ MFC Forum RSS Feed

How to prevent resizing of column in CListCtrl

Wed, 08 Feb 2012 01:01:24 -0800

I am working on a CDHTMLDialog based application where I ahve added a CListCtrl as shown below.

The list control has only one column.

IDD_TEST_DIALOG DIALOGEX 0, 0, 419, 286
STYLE DS_SETFONT | DS_FIXEDSYS | DS_CENTER | WS_MINIMIZEBOX | WS_POPUP | WS_VISIBLE | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME
EXSTYLE WS_EX_APPWINDOW
FONT 8, "MS Shell Dlg", 0, 0, 0x1
BEGIN
CONTROL "",IDC_LIST_TEXT,"SysListView32",LVS_REPORT | LVS_OWNERDATA | LVS_NOSORTHEADER | NOT WS_VISIBLE | WS_BORDER | WS_TABSTOP,20,143,397,136
END

The problem is that I can drag the colum header to extreme left and the column goes hidden. To bring it back I will have to again drag the column header to the right.

I want to prevent resizing of this column so that the user cannot drag this completely to the left and make it hidden.

I did try the following code but it is not working.

void CMyTestDlg::OnHDNEndtrackListLog(NMHDR *pNMHDR, LRESULT *pResult)
{
LPNMHEADER phdr = reinterpret_cast<LPNMHEADER>(pNMHDR);
// TODO: Add your control notification handler code here
if(m_ListCtrl.GetColumnWidth(0) < 100)
{
m_ListCtrl.SetColumnWidth(0, 500);
}

*pResult = 0;
}
Since I have very less time to implement this, I request you kindly give me some examples from MFC Dialog based applications.

How to prevent resizing of column in CListCtrl

Wed, 08 Feb 2012 00:58:17 -0800

Unhandled Exception: Access Violation

Wed, 25 Jan 2012 01:27:05 -0800

Hello Everyone,

Am working creating MFC DLL & am getting an error:Unhandled exception at 0x00000000 in Key_Testing.exe: 0xC0000005: Access violation.

The DLL Code is like this:

//Demo.h
char* GetDiskSerialNumber (char g_DiskLetter);

//Demo.cpp
char* DLLclass::GetDiskSerialNumber(char g_DiskLetter)
{
CHAR SN[64];
memset(SN,0,sizeof(SN));

if(GetSerialNumber(SN,g_DiskLetter)){ // Error in this Line..
return (char*)SN;
}
}

This DLL am using in an application..
void CKey_TestingDlg::OnBnClickedgetserial()
{
// TODO: Add your control notification handler code here
DLLclass Dllobj;
char ltr='h';
char* ser=Dllobj.GetDiskSerialNumber(ltr);
}

Please,, Could anyone suggest where i gone wrong.. Any help will be appriciated..

Thank you.

static_cast int to CString

Wed, 28 Dec 2011 07:50:45 -0800

I am converting some old VC-6 MFC code to VC-10 (64 bit) that was done by a previous employee and have a problem. There is a template defined that uses a static_cast to convert an int to a CString. The VC-6 compiler had no problem with it but the VC-10 compliler complains.

template<typename T>
T Get( CGraphWnd& oGraph, GR_PARAM eparam, T* )
{
int nValue;
if( !ograph.GetIntParameter( eparam, &nValue ) )
AfxThrowOleException( E_FAIL );
return static_cast<T>( nValue );
}
CString Get( GraphWnd& ograph, GR_PARAM eparam, CString* );

The error is: "Error C2440: static_cast cannot convert from int to CString."

I am suspecting there is a compiler option that needs to be done (or undone) but cannot find anything. Any ideas?

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How to get controls information in a window.

Thu, 27 Oct 2011 22:33:15 -0800

Can anyone help me to get the information about all the controls in a window.
For Ex: suppose if you are opening a properties window of a folder,there you can find textbox,button,tabs etc. so i need to get the information about all the controls in the window.please help me i am waiting.....

How to get controls information in a window.

Thu, 27 Oct 2011 22:29:50 -0800

Using Timer with non-dialog class

Tue, 25 Oct 2011 01:19:22 -0800

Hello,

I have a class that doesn't connect to a dialog or window
and I need to do some operations on timer but the timers works only with dialogs ,
does anyone know another way I do it?

thank

Please give me some idea 3D surface of revolution

Thu, 22 Sep 2011 07:14:08 -0800

Dear Friends
I have a dataset like below. 1 means Straight line with startPointX,startPointY,endPointX,endPointY.

////////////////////////////////////////////////// ////////////
1 0.000000 24.600000 -15.500000 28.575000
1 -15.500000 28.575000 -37.700000 28.575000
1 -37.700000 28.575000 -37.700000 36.515000
1 -37.700000 36.515000 -59.920000 36.515000
1 -178.200000 52.000000 -138.200000 52.000000
1 0.000000 24.600000 0.000000 19.000000
1 -125.421613 36.515000 -138.200000 52.000000
1 -123.421613 36.515000 -107.873000 36.515000
1 -100.000000 19.000000 0.000000 19.000000
1 -105.873000 36.515000 -94.557821 36.515000
1 -66.103821 36.515000 -88.374000 36.515000
1 -100.000000 19.000000 0.000000 19.000000
1 0.000000 19.000000 0.000000 24.600000
1 0.000000 24.600000 -15.500000 28.575000
1 -15.500000 28.575000 -37.700000 28.575000
1 -37.700000 28.575000 -37.700000 36.515000
1 -37.700000 36.515000 -59.920000 36.515000
1 -66.103821 36.515000 -88.374000 36.515000
1 -94.557821 36.515000 -105.873000 36.515000
1 -107.873000 36.515000 -123.421613 36.515000
1 -125.421613 36.515000 -138.200000 52.000000
1 -138.200000 52.000000 -178.200000 52.000000
1 -115.000000 0.000000 -115.000000 15.000000
1 -115.000000 15.000000 -100.000000 15.000000
1 -100.000000 15.000000 -100.000000 19.000000
1 -100.000000 19.000000 0.200000 19.000000
1 0.200000 19.000000 0.000000 19.000000
1 0.000000 19.000000 0.000000 24.574923
1 0.000000 24.574923 -0.000000 24.600000
1 0.000000 24.600000 -15.500000 28.575000
1 -15.500000 28.575000 -37.700000 28.575000
1 -37.700000 28.575000 -37.700000 36.515000
1 -37.700000 36.515000 -59.920000 36.515000
1 -59.920000 36.515000 -66.103821 36.515000
1 -66.103821 36.515000 -88.374000 36.515000
1 -88.374000 36.515000 -94.557821 36.515000
1 -94.557821 36.515000 -105.873000 36.515000
1 -105.873000 36.515000 -107.873000 36.515000
1 -107.873000 36.515000 -123.421613 36.515000
1 -123.421613 36.515000 -125.421613 36.515000
1 -125.421613 36.515000 -138.200000 52.000000
1 -138.200000 52.000000 -178.200000 52.000000
1 -178.200000 52.000000 -178.200000 52.500000
1 -178.200000 52.500000 -178.200000 55.000000
1 -178.200000 55.000000 -190.000000 55.000000
1 5.000000 0.000000 5.000000 55.000000
1 5.000000 55.000000 -190.000000 55.000000
////////////////////////////////////////////////// ////////////

I have to construct a profile which I can easily do by making a GL_LINES.

After that I need rotate the profile by x-axis and construct a surface of revolution. Please giveme some idea how can I achieve this. I have done something but I am not getting the surface.

Like I am storing the original startPoints and endPoints in an array with assuming z=0.
Then rotating each point by x-axis. so x-values will be same and y and z values I am calculating using this formula.
y = y cosq - z sinq;
z = ysinq + zcosq;

Is this correct...?? Then I am defining a number of loops and in loop I am creating GL_QUADS for each startPoint and endPoint...
1st loop 1ststartPoint, 1stLoop 1stendPoint
2nd loop 1stStartPoint, 2nd loop 1stEndPoint...

But I am not getting any 3D surface. Please help me.........Check the code below.

////////////////////////////////////////////////// ////////////////////////////////////////////////// //////
typedef struct point3D{
float x;
float y;
float z;
}POINT3D;

int count1;
POINT3D *startPoints, *endPoints;

void CRevolutionProjView::drawProfile(CString filename)
{
pFrame->m_wndStatusBar.SetPaneText(0,L"DrawProfile !!");

// profile to be drawn

GLfloat PI = 4 * atan(1.0);

//file needs be open
double startPX, startPY, endPX, endPY;
double cenX, cenY, cenZ, rad, startA, endA;
ifstream indata; // indata is like cin
int id; // variable for input value
indata.open(filename); // opens the file
if(!indata) { // file couldn't be opened
cerr << "Error: file could not be opened" << endl;
exit(1);
}
count1=0;
while ( !indata.eof() ) { // keep reading until end-of-file
indata >> id;
cout << "The id is " << id << endl;
if(id==1)
{
indata >> startPX >> startPY >> endPX >> endPY;
glBegin(GL_LINES);
glVertex2f(startPX, startPY); // origin of the line
glVertex2f(endPX, endPY); // ending point of the line
glEnd();

if(count1==0)
{
startPoints = (POINT3D *)malloc(sizeof(POINT3D));
endPoints = (POINT3D *)malloc(sizeof(POINT3D));
}
else
{
startPoints = (POINT3D *)realloc(startPoints,sizeof(POINT3D)*(count1+1));
endPoints = (POINT3D *)realloc(endPoints,sizeof(POINT3D) * (count1+1));

}
startPoints[count1].x = startPX;
startPoints[count1].y = startPY;
startPoints[count1].z = 0.0f;
endPoints[count1].x = endPX;
endPoints[count1].y = endPY;
endPoints[count1].z = 0.0f;
count1++;
}
}
indata.close();
cout << "End-of-file reached.." << endl;

}

void CRevolutionProjView::drawSurface()
{

double PI = 4.0 * atan(1.0);

//I have x and y points;

//count1 = numberof points

//theta = 0 to 360 degs.

//nsweep = number of sweeps. 360/nsweep = each angle;
int nsweep=4;

//no of profiles = nsweep + 1...

//each profile will have count1 no of lines...so count1 startpoints and count1 endPoints...

//so...total startPoints and endPoints for (nsweep+1) profiles = (nsweep+1) * count1...

POINT3D *totalStartPoints, *totalEndPoints;
totalStartPoints = new POINT3D[(nsweep+1)*count1];
totalEndPoints = new POINT3D[(nsweep+1)*count1];
int cnt1=0;
double theta, inter;
inter = (360/nsweep) * (PI/180);
theta = 0;
for(int i=0; i<(nsweep+1); i++)
{
for(int j=0; j<count1; j++)
{
totalStartPoints[cnt1].x = startPoints[j].x;
totalStartPoints[cnt1].y = startPoints[j].y * cos(theta) - startPoints[j].z * sin(theta);
totalStartPoints[cnt1].z = startPoints[j].y * sin(theta) + startPoints[j].z * cos(theta);

totalEndPoints[cnt1].x = endPoints[j].x;
totalEndPoints[cnt1].y = endPoints[j].y * cos(theta) - endPoints[j].z * sin(theta);
totalEndPoints[cnt1].z = endPoints[j].y * sin(theta) + endPoints[j].z * cos(theta);
cnt1++;
}

theta = theta + inter;
}

cnt1=0;
glColor3f(1.0f,0.0f,0.0f);
for(int i=0; i<nsweep; i++)
{
for(int j=0; j<count1; j++) {

GLfloat *v0, *v1, *v2, *v3;

v0 = new GLfloat[3];
v1 = new GLfloat[3];
v2 = new GLfloat[3];
v3 = new GLfloat[3];

v0[0] = totalStartPoints[cnt1].x;
v0[1] = totalStartPoints[cnt1].y;
v0[2] = totalStartPoints[cnt1].z;

v1[0] = totalEndPoints[cnt1].x;
v1[1] = totalEndPoints[cnt1].y;
v1[2] = totalEndPoints[cnt1].z;

v2[0] = totalEndPoints[cnt1+count1].x;
v2[1] = totalEndPoints[cnt1+count1].y;
v2[2] = totalEndPoints[cnt1+count1].z;

v3[0] = totalStartPoints[cnt1+count1].x;
v3[1] = totalStartPoints[cnt1+count1].y;
v3[2] = totalStartPoints[cnt1+count1].z;

glBegin(GL_QUADS); // draw a cube with 6 quads
glVertex3fv(v0); // front face
glVertex3fv(v1);
glVertex3fv(v2);
glVertex3fv(v3);
glEnd();
delete v0;
delete v1;
delete v2;
delete v3;
cnt1++;
}
}

////////////////////////////////////////////////// ////////////////////////////////////////////////// //////

MFC OpenGL Invalidate Flickering

Wed, 14 Sep 2011 09:22:52 -0800

Dear Friends
I am wirting an application for drawing a rectangle on the screen using opengl and mfc. So I implemented the OnPaint function, OnDraw function is also giving the same problem. It's drawing fine. I want to implement pan, zoom, and rotate functionalities. Now everytime the mouse moves I am calling Invalidate() or otherwise I can call Invalidate() in the ::OnDraw function. Pan, zoom and rotate everything is happening but its heavily flickering. I have serached a lot and tried all means like return 1 in the OnEraseBackground() functio for WM_ERASEBACKGROUND etc. But I am getting still flickering . Please help getting rid of this problem. Check the code snippet below.

void CRevolutionProjView::OnPaint()
{
CPaintDC dc(this); // device context for painting
// TODO: Add your message handler code here
CRect RectAff;
GetClientRect(RectAff);
glClearColor ( 0.0f, 0.0f, 0.0f, 0.0f ) ;
glClear ( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ) ;
glPushMatrix( ) ;
glTranslatef(trans[0], trans[1], trans[2]);
glRotatef(rot[0], 1.0f, 0.0f, 0.0f);
glRotatef(rot[1], 0.0f, 1.0f, 0.0f);
drawcube();
glPopMatrix( ) ;
glFinish( ) ;
glFlush();
SwapBuffers(hDC);
Invalidate(false);
// Do not call CView::OnPaint() for painting messages
}

void CRevolutionProjView::OnMouseMove(UINT nFlags, CPoint point)
{
newP = point;
// TODO: Add your message handler code here and/or call default
int dx = oldP.x - newP.x;
int dy = newP.y - oldP.y;
switch(STATE)
{
case PAN:
{
trans[0] -= dx/100.0f;
trans[1] -= dy/100.0f;
// Invalidate();
}
break;
case ZOOM:
{
trans[2] -= (dx+dy) / 100.0f;
// Invalidate();
}
break;
case ROTATE:
{
rot[0] += (dy * 180.0f) / 500.0f;
rot[1] -= (dx * 180.0f) / 500.0f;
#define clamp(x) x = x > 360.0f ? x-360.0f : x < -360.0f ? x+=360.0f : x
clamp(rot[0]);
clamp(rot[1]);
// Invalidate();

}
break;
}

oldP = newP;

CView::OnMouseMove(nFlags, point);
}

How to update text in CStatic without blinking

Tue, 30 Aug 2011 22:50:11 -0800

Hi All.

On a dialog I have a CStatic control which I want to refresh dynamically. I tried to use SetDlgItemText, SetWindowText and
some other functions, however whenever I update the control's text it blinks.
Can anyone help me how can I refresh the control's text without blinking?

Thanks in advance.

Trying to use CTabCtrl - VS 2010

Wed, 27 Jul 2011 06:41:54 -0800

Am trying to place child dialogs inside a CTabCtrl, using the example/tutorial at http://www.codersource.net/mfc-tutorials.ctabctrl.aspx . I have now worked through the example twice and gotten it to build -- but it incurs an access violation on trying to Create my child dialogs, because GetParent() fails, because someone's (not sure whose) m_hWnd is NULL. I am sort of new to all this, don't know the particular operations that have to happen, in what order, or how I make that happen, to get m_hWnd NOT to be NULL at that point in the program.

Oddly, the downloadable .zip of source code linked from that site, after conversion to VS 2010, builds AND works, yet a diff between its files and mine shows only very minor differences, in areas that, as far as I can tell, don't seem to have any bearing on creating subclassed Dialog controls.

I would very much appreciate any light anyone can shed. Thanks in advance.

convert CString Ascii to decimal from serial port

Sun, 24 Jul 2011 13:40:10 -0800

Hello...
I Have a MFC application and I want to convert CString Ascii to decimal from serial port. this my source code :

		
        int dcount=0;
	CString data[4];
		VARIANT in_dat;

	if(	m_comm.GetCommEvent()==2)
	{
			in_dat = m_comm.GetInput();
			CString strInput(in_dat.bstrVal);

			if(strInput == "*")
			{
			for(dcount=0; dcount<=2;dcount++)
			{
				in_dat = m_comm.GetInput();
				CString strInput(in_dat.bstrVal);

				data[dcount] = strInput;
			}
				int z = atoi(data[0]); // convert ascii to decimal
				int x = atoi(data[1]);
				int c = atoi(data[2]);
				m_Total.Format("%s%i%i%i | %s%s%s%s",strInput,z,x,c, strInput,data[0],data[1],data[2]);
			}

			
			
	}
			UpdateData(FALSE);

if I run the program a result is false. I'm sorry I can't speak english fluently... thx

CEdit: problem with displaying a box on a control addition

Sun, 24 Jul 2011 06:21:17 -0800

Using a regular create I try to add an input control and it displays only a text of the control, but not the box.

Actually I try to have a dialog - on a click of a button I need to create an input for a matrix. So there's not problem of taking the value from already created controls, but after "creation" of a new one (CEdit) only the text appears on a form.... Can anyone explain to me how I can resolve this problem, PLEASE! This might be a simple answer, but I could not figure for a past couple days:)

Flickering on resize

Sun, 17 Jul 2011 17:53:59 -0800

Hi, I'm using a windows form, and I'm doing all the drawing myself, that is: Copying the image to an off-screen surface, then doing a bit_blit to "swap" with the surface on the window. It works great, except when I resize. Somewhere under the hood, MFC is telling the window to completely erase the background before drawing again. I want to turn off that behaviour. How do I do that?

Based on msdn and other resources, the best lead I've found is this:

BOOL CChildView::PreCreateWindow(CREATESTRUCT& cs) 
{
	if (!CWnd::PreCreateWindow(cs))
		return FALSE;

	cs.dwExStyle |= WS_EX_CLIENTEDGE;
	cs.style &= ~WS_BORDER;
	cs.lpszClass = AfxRegisterWndClass(CS_HREDRAW|CS_VREDRAW|CS_DBLCL
KS, 
		::LoadCursor(NULL, IDC_ARROW), reinterpret_cast<HBRUSH>(COLOR_WINDOW+1), NULL);

	return TRUE;
}

According to msdn, if you set the classStyle to NULL, that'll override the erase behaviour. I tried that, and it doesn't work.
http://msdn.microsoft.com/en-us/library/cw5335z0%28v=vs.80%29.aspx

I've read elsewhere that you gotta override OnEraseBcknd to always return TRUE, or always return FALSE. Tried both, doesn't work.

Has anyone found a solution to this problem in MFC?

How to write to console while running MFC application

Mon, 11 Jul 2011 18:12:57 -0800

Hey,
I have a MFC application and I want to write the values of some variables while the application is running to the console. Is there a way to do this and if so how?
Thanks In Advance!!

color edit box?

Thu, 05 May 2011 23:44:28 -0800

hello every one,..

if I have 10 edit boxes, and the user enter text into only 5 of these edit box
I want to change the color of text entered by user
while the remainder edit boxes (no used by user) will have the default color(black)

note that all variables associate with edit boxes is of type integer

any suggestion idea..?
or even idea to make it bold or italic font

thx in advance

Problems with MFC and OpenGL objects together with Windows 7 Aero

Wed, 06 Apr 2011 06:20:02 -0800

Hello programmers,

I solve a strange behavior of MFC graphic objects together with OpenGL objects when Windows 7 Aero is enabled on my desktop. I describe that matter more detail now, I have created MDI application by MFC framework in VC++ where I have implemented OpenGL functions to draw 3D objects. In some child windows, there is a need to draw any 2D graphic objects provided by MFC (e.g. ellipse) realized by CDC to that window where has been drawn OpenGL 3D object. When Aero is disabled, it works excellently but if it's enabled, then e.g. ellipse is drawn into a rectangle area that has a background including rubbish of some graphical buffer (probably second buffer of the double buffer drawing). I know, the Aero is a new technology implemented there that uses double buffer mechanism. I'm also able to disable Aero motive from my application, but it has a global influence to all running applications because their appearence is change to the basic motive. I don't want to solve this problem by disabling the Aero, it's not professional. I would like to solve the objects drawing where I mix OpenGL rendering context together with MFC device context in one child window.

When I specify the PIXELFORMATDESCRIPTOR structure for the SetPixelFormat function with PFD_DOUBLEBUFFER flag, then I have the mentioned problem. When I change the flag to PFD_SUPPORT_GDI, then it works properly but the 3D objects drawing is too slow, it's really unusable.

Does anybody know how to solve this unpleasant problem with mentioned graphical constellation?

Is there any mechanism to block the double buffers drawing?

Thanks for answers.

Michal

How to know if a thread is finished and wait for it if it isn't

Sat, 26 Mar 2011 15:57:11 -0800

I can't believe I don't know this already, but I'm unable to figure out how to know if a thread is finished and wait for it if it isn't w/out a race condition. I've used the AfxBeginThread() to start it, and I'm told that I would WaitForSingleObject() to know when it is done, but it seems that that function returns WAIT_FAILED if the thread is no longer running. What's the appropriate way to just know if it's done and wait if it hasn't without a race condition?

Own Constructor doesn't work.

Thu, 24 Mar 2011 01:44:10 -0800

Hello,

I have created my own derived class which base class is CFileDialog, then I have also created my own contructor to that file, my contructor should open a file dialog box with possiblity of choosing file, but after placing a command button and clicking on it, the only thing I get is something like AfxMessageBox with error message :

Attempted an unsupported action

I use VS C++ 2008, could you please tell me why I get this error message, please see definition of my class, below :
<code>
class FileDialog : public CFileDialog
{
DECLARE_DYNAMIC(FileDialog)

public:

// Constructor
FileDialog(BOOL bOpenFileDialog,
LPCTSTR lpszFileName = NULL,
DWORD dwFlags = OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
CWnd *pParentWnd = NULL);

};
// Contructor on button click :
void PageFile::OnBnClickedButton1()
{
// TODO: Add your control notification handler code here
FileDialog elo(true);
}

</code>

Problem with RegisterPowerSettingNotification and USER32.dll.

Thu, 10 Mar 2011 04:37:30 -0800

Hello,

When I call to the fanction RegisterPowerSettingNotification I get a runtime error:

"The procedure entry point could not be located in the dynamic link library USER32.dll."

I tried to replace user32.dll but its didnt help.

My OS is windows xp, the code is:

HPOWERNOTIFY m_hPowerSchemeNotify;
m_hPowerSchemeNotify = RegisterPowerSettingNotification (
NULL, &GUID_POWERSCHEME_PERSONALITY,
DEVICE_NOTIFY_WINDOW_HANDLE );

if ( NULL == m_hPowerSchemeNotify )
ATLTRACE("Failed to register for notification of power scheme changes!\n");

if anyone can guid me how can I solve this problam I would be very grateful for him.

thanks

What is the problem of this program...?

Tue, 22 Feb 2011 05:59:44 -0800

I've write this program and I don't know why

I have problem when I run that...

Please download it and help me.
Thanks.

Attachment: Mechan.rar (39627 bytes | downloaded 39 times)

Rich Edit Control Internal Data Structure

Tue, 15 Feb 2011 03:23:05 -0800

I have a Handle to the Rich Edit Control of Wordpad application in my Keypad application. I want to directly access the Internal Data Structure for this Rich Edit Control without using Windows Messages .
I do not want to use any of the SendMessage PostMessage APIs or Windows Messaging as this exposes my typed data to keyloggers. How can I write directly to the Internal Buffer of Rich Edit Control ?

How to use CTabCtrl::GetCurSel in MFC C++

Fri, 28 Jan 2011 16:37:29 -0800

Hey,
I am trying to call CTabCtrl::GetCurSel() in my program and if a certain tab is selected to do a certain action. I am aware that this function returns the zero-based index of the selected tab, which is the problem for me. How can you find out the index of a tab? Any help will be greatly appreciated!!!

How to update an edit box control durning run time

Wed, 26 Jan 2011 18:55:54 -0800

Hey,
I am new to MFC and I am working on this existing project where there is a button and when you click this button another dialog opens that has four different tabs. My job is to save data entered in an edit box on one of the tabs if the send button on the same tab page is clicked and show the saved data when the dialog is opened again. If the send button is not clicked I need to set the edit box data to a default value and show it when the dialog is opened again. I have this working when the user changes between tabs by placing methods in the OnShowWindow(). However, this method is not called when the dialog is closed via the close button or the "x" on dialog. Once the dialog is closed and opened back up it opens the dialog showing the last tab viewed before closing the dialog. With this in mind, I plcae some methods in the close button and in debug the methods are executed correctly but the edit box on the tab is not updated with the correct data when the dialog is opened. Is there any way to do this? Any help will be great!!!