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sudeep_br wrote: i have a edit box named as NAME and a OK button
Handle EN_CHANGE message for your edit box in your appplication..for reteriving value from edit box using GetWindowText api, based on it value either append it in location box using GetWindowText and SetWindowText or Disable the Edit Box using EnableWindow(...) if empty value has been entered
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ThatsAlok wrote: Handle EN_CHANGE message for your edit box in your appplication..for reteriving value from edit box using GetWindowText api, based on it value either append it in location box using GetWindowText and SetWindowText or Disable the Edit Box using EnableWindow(...) if empty value has been entered
when i enter sum text in edit box the OK button is enabled but when i delete the entered text,the ok button shud be disabled again. how to do this?
ALSO
i have 2 radio buttons in a dialog box. i want to either of them to be checked(ie t shud be selected) when dialog box is first loaded. pls help.
Thanks
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sudeep_br wrote: when i enter sum text in edit box the OK button is enabled but when i delete the entered text,the ok button shud be disabled again. how to do this?
same way after seeing the length of text disable with EnableWindow Api
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Its better u read VC++ in 21 days 
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parichaybp wrote: Its better u read VC++ in 21 day
Nice book!
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Something like:
void CMyDialog::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
DDX_Control(pDX, IDC_EDIT, m_edit);
DDX_Control(pDX, IDOK, m_ok);
}
BEGIN_MESSAGE_MAP(CMyDialog, CDialog)
ON_EN_CHANGE(IDC_EDIT, OnChange)
END_MESSAGE_MAP()
void CMyDialog::OnChange()
{
m_ok.EnableWindow(m_edit.GetWindowTextLength() > 0);
}
"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain
"There is no death, only a change of worlds." - Native American Proverb
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DavidCrow wrote: void CMyDialog::DoDataExchange(CDataExchange* pDX){ CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CMyDialog) DDX_Control(pDX, IDC_EDIT, m_edit); DDX_Control(pDX, IDOK, m_ok); //}}AFX_DATA_MAP} BEGIN_MESSAGE_MAP(CMyDialog, CDialog) //{{AFX_MSG_MAP(CMyDialog) ON_EN_CHANGE(IDC_EDIT, OnChange) //}}AFX_MSG_MAPEND_MESSAGE_MAP() void CMyDialog::OnChange() { m_ok.EnableWindow(m_edit.GetWindowTextLength() > 0);}
when i entered the above code i got the following error
" error C2039: 'GetWindowTextLengthA' : is not a member of 'CString'"
pls tell me the solution for this
Thanks
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You should not be using a CString object for an edit control. Use CEdit instead.
"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain
"There is no death, only a change of worlds." - Native American Proverb
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DavidCrow wrote: void CMyDialog::OnChange() { m_ok.EnableWindow(m_edit.GetWindowTextLength() > 0);}
I am getting this error "'GetWindowTextLengthA' : is not a member of 'CString'"
u suggested Cedit instead of Cstring for edit box but when i go to class wizard and then to member variable name i only have cstring as variable type option apart from int, bool etc. theres no option Cedit. what should i do?
Regards
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sudeep_br wrote: ...but when i go to class wizard and then to member variable name i only have cstring as variable type option apart from int, bool etc. theres no option Cedit. what should i do?
Change the Category from Value to Control.
"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain
"There is no death, only a change of worlds." - Native American Proverb
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hi all ,
i want to get the path for ping.exe which will be in \\Windows\\System32\\Ping.exe but i cant specify a particular drive(C,D...) because the OS can be installed in any drive.I need to get the exact path of ping.exe .
Please suggest me how do i look for it.
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hi all
I am not able to find the short cut keys which enables us to toggle from workspace window to .cpp window ..in VC IDE.
Does anyone know please?
redindian
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to go to Solution explorer Ctrl + Alt + L
to go to resource view ctrl + shift + e
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I have a visual c++ program, it worked nicely for data processing.
Recently I added a edit box and add more code in the "next" subroutine.
The program is complied and generated *.exe successfully. This routine
should be invocated by pressing "Next" button.
Now when I run the program and push the "Next" button, I got:
<data_proc mfc="" application="" has="" encountered="" a="" problem=""
and="" needs="" to="" close.="" we="" are="" sorry="" for="" the="" inconvenience.="">
I tried to display some variable values at the right beginning of
the subroutine Next, it seems the program even not reach the point.
I do not know how to fix this. I need a help.
Thanks
-- modified at 23:56 Sunday 9th April, 2006
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hi there
paste the code which is called in the event handler ..
redindian
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#include <string>
#include "stdafx.h"
#include "data_vib_proc.h"
#include "feature_display.h"
#include "data_vib_procDlg.h"
#include "test_window.h"
#include "cmath"
using std::string;
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About
class CAboutDlg : public CDialog
{
public:
CAboutDlg();
// Dialog Data
//{{AFX_DATA(CAboutDlg)
enum { IDD = IDD_ABOUTBOX };
//}}AFX_DATA
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CAboutDlg)
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
//}}AFX_VIRTUAL
// Implementation
protected:
//{{AFX_MSG(CAboutDlg)
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
//{{AFX_DATA_INIT(CAboutDlg)
//}}AFX_DATA_INIT
}
void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CAboutDlg)
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
//{{AFX_MSG_MAP(CAboutDlg)
// No message handlers
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CData_vib_procDlg dialog
CBlast_vib_procDlg::CBlast_vib_procDlg(CWnd* pParent /*=NULL*/)
: CDialog(CBlast_vib_procDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CData_vib_procDlg)
m_linklist_file_Name = _T("");
m_monitors_coord = _T("");
m_output_file_name = _T("");
m_seed_waveform_input = _T("");
m_predicted_waveform_output = _T("");
m_prediction_monitor_no = 1;
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
....
....
....
void CData_vib_procDlg::Next()
{
FILE *f_ptr1;
FILE *f_ptr2;
FILE *f_ptr3;
FILE *f_ptr4;
FILE *f_ptr5;
const int MAX=15;
CString title_seed_file;
// ifstream f_ptr3;
float f0 = 30.0;
int nz,nz1,ndeck2;
float ppv_pred, ppa_pred, pi = 3.1415926f;
char buffer[MAX];
CBlast_vib_procDlg rr;
feature_display ff;
test_window twindow;
// TODO: Add your control notification handler code here
//
twindow.m_test_variable = int(1.5);
twindow.DoModal();
UpdateData(false);
UpdateData();
if(m_linklist_file_Name == "" || m_monitors_coord == ""||m_output_file_name=="" || m_si_waveform_input == ""||m_predicted_form_output=="")
{
MessageBox("All file names have to be typed in !");
rr.m_linklist_file_Name = m_linklist_file_Name;
rr.m_monitors_coord = m_monitors_coord;
rr.m_output_file_name = m_output_file_name;
rr.m_si_form_input = m_si_form_input;
rr.m_predicted_form_output = m_predicted_form_output;
rr.m_prediction_monitor_no = m_prediction_monitor_no;
rr.DoModal();
UpdateData(false);
}
// open linklist data file
if((f_ptr1 = fopen(m_linklist_file_Name,"r")) == NULL) {
MessageBox("Linklist file open problems !");
rr.m_linklist_file_Name = m_linklist_file_Name;
rr.m_monitors_coord = m_monitors_coord;
rr.m_output_file_name = m_output_file_name;
rr.m_si_form_input = m_si_form_input;
rr.m_predicted_form_output = m_predicted_form_output;
rr.m_prediction_monitor_no = m_prediction_monitor_no;
rr.DoModal();
UpdateData(false);
}
// open monitor coordinates data file
.....
.....
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Set a breakpoint in the Next() method and single-step through it from that point.
mrby123 wrote: twindow.DoModal();
Is this dialog displayed?
mrby123 wrote: UpdateData(false);
UpdateData();
Consider removing these. Used incorrectly, which it looks as though they are, can lead to all sorts of unwanted problems.
What does the message map for CData_vib_procDlg look like?
"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain
"There is no death, only a change of worlds." - Native American Proverb
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I tried to set-up a breaking point inside "Next", but the program did not go that far (even the breaking point at the beginning of the "next") and stoped to give the error message.
I am thinking some of the array size in the program is too big causing overflow. That may be the problem.
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mrby123 wrote: I tried to set-up a breaking point inside "Next", but the program did not go that far
Does the "Next" button have an ON_BN_CLICKED() handler? What does the message map for CData_vib_procDlg look like?
"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain
"There is no death, only a change of worlds." - Native American Proverb
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here is the message-map:
BEGIN_MESSAGE_MAP(CData_vib_procDlg, CDialog)
//{{AFX_MSG_MAP(CData_vib_procDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDNext, Next)
ON_BN_CLICKED(IDExit, OnExit)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
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Hmmmm, if you've set a breakpoint in the Next() method and it is not being hit, I do not know what the problem is.
You mentioned something about an array. Does your program have them? Are they on the stack or the heap?
"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain
"There is no death, only a change of worlds." - Native American Proverb
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Now I found the array size is too big (global array - stack ?)
I get into the Next subroutine. I put a few breaking point and I checked the reading
all right.
However, I got:
"Debudg assertion failed."
what is the problem and how to fix it ?
Thanks
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mrby123 wrote: Now I found the array size is too big (global array - stack ?)
How is it declared? How large is it?
mrby123 wrote: I get into the Next subroutine.
What statement?
mrby123 wrote: However, I got:
"Debudg assertion failed."
what is the problem and how to fix it ?
That's hard to say without knowing what line of what file asserted.
"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain
"There is no death, only a change of worlds." - Native American Proverb
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