C / C++ / MFC

22-Jul-09 6:24

hello,

i want to start and stop other process (win32 vc++ application without gui) in a mfc dialog application. please tell me how to do that ?

for stopping, i read that TerminateProcess() can be used but it should be used in extreme circumstances. The state of global data maintained by dynamic-link libraries (DLLs) may be compromised if TerminateProcess is used. so is it safe to use it ??

Rajesh R Subramanian22-Jul-09 6:55

Rajesh R Subramanian

22-Jul-09 6:55

Hello,

rahuljin wrote:
want to start and stop other process (win32 vc++ application without gui)

What kind of an application are you developing?

You can use ShellExecute[^] to create a process. Or if you want more options and possibly control over the spawned process, there is CreateProcess[^]

No, you shouldn't be using TerminateProcess(), but again if you say what kind of application are you writing (and if you have written the spawned process as well), a better alternative might be suggested to you.

It is a crappy thing, but it's life -^ Carlo Pallini

rahuljin22-Jul-09 7:23

22-Jul-09 7:23

mfc application creates some text files which are used by other win32 c++ program. if i try to access the files through mfc application while win32 c++ program running, it causes the crash of the mfc application (beacuse i dont used any 'if' for file open and i cant).

i used the createprocess() and it is working great.

Rajesh R Subramanian23-Jul-09 7:50

Rajesh R Subramanian

23-Jul-09 7:50

rahuljin wrote:
mfc application creates some text files which are used by other win32 c++ program. if i try to access the files through mfc application while win32 c++ program running, it causes the crash of the mfc application (beacuse i dont used any 'if' for file open and i cant).

I don't understand this. If you could explain me better, and tell me what exactly are you trying to achieve, I may be able to help you.

It is a crappy thing, but it's life -^ Carlo Pallini

rahuljin23-Jul-09 9:22

23-Jul-09 9:22

i created the win32 c++ application long back when i dont have any idea of mfc. it is working fine.

with mfc, i create a gui which accept the some content and save them in text files. these text files are then used by the win32 application. win32 application runs at startup of windows and it takes the information from the files and starts using it (it is socket application so it will not read the file again until it receives some information for the ip which is saved in the text file).

so i want to restart the win32 application when closing mfc application so that win32 application can use the updated text files.

actually i want to use TerminateProcess() and then start it with CreateProcess() function. but i read that TerminateProcess() can create problem with DLL structure.

rahuljin22-Jul-09 10:05

22-Jul-09 10:05

please tell me how to use TerminateProcess() function. if there is an alternative for this function, please suggest.

How to set CTabCtrl background colour?

killabyte22-Jul-09 15:18

killabyte

22-Jul-09 15:18

might want to look at ExitProcess() also

risa0922-Jul-09 4:57

risa09

22-Jul-09 4:57

I have Tabctrl in a dialog.I want to set its background colour for each tab .I tried ON_WM_DRAWITEM but the control never comes in OnDrawItem().Can you help?

#define RED RGB(255,0,0)
#define YELLOW RGB(255,255,0)
#define MAGENTA RGB(255,0,255)
#define WHITE RGB(255,255,255)
#define BLUE RGB(0,0,255)

void CVMListDialog::OnDrawItem(int nIDCtl, LPDRAWITEMSTRUCT lpdis)
{
CDialog::OnDrawItem(nIDCtl, lpdis);

char szTabText[100];
RECT rect;
UINT bkColor;
CBrush *cbr;
TC_ITEM tci;

CTabCtrl *pTabCtrl = (CTabCtrl *)GetDlgItem(IDC_TAB_VM);

if (pTabCtrl->m_hWnd == lpdis->hwndItem)
{
// which tab?
switch (lpdis->itemID)
{
case 0:
cbr = &m_brRed;
bkColor = RED;
break;

case 1:
cbr = &m_brYellow;
bkColor = YELLOW;
break;

case 2:
cbr = &m_brMagenta;
bkColor = MAGENTA;
break;

case 3:
cbr = &m_brWhite;
bkColor = WHITE;
break;

case 4:
cbr = &m_brBlue;
bkColor = BLUE;
break;
}

memset(szTabText, '\0', sizeof(szTabText));

tci.mask = TCIF_TEXT;
tci.pszText = szTabText;
tci.cchTextMax = sizeof(szTabText)-1;

pTabCtrl->GetItem(lpdis->itemID, &tci);

CDC *dc = CDC::FromHandle(lpdis->hDC);

dc->FillRect(&lpdis->rcItem, cbr);
dc->SetBkColor(bkColor);

TextOut(lpdis->hDC,
lpdis->rcItem.left,
lpdis->rcItem.top,
tci.pszText,
lstrlen(tci.pszText));
}

}

Re: How to set CTabCtrl background colour?

omjee26-Nov-09 22:20

omjee

26-Nov-09 22:20

You must have set the "owner draw propery " dialouge proprty in your application either by dialouge wizard or by code.

notjing

User control problem Data bind

beesan22-Jul-09 1:36

beesan

22-Jul-09 1:36

Hello All;
i make a user control on c# using ultragrid control the problem is when i take the dll in order to use it in other projects the data doesnt appear, the grid reads the data from the data base

the code of the user control:
the grid name here is ulGrid

<br />
<br />
public partial class GridUserControl : UserControl<br />
    {<br />
        Infragistics.Win.UltraWinGrid.UltraGrid ulGrid = new UltraGrid();<br />
        Infragistics.Win.UltraWinGrid.ExcelExport.UltraGridExcelExporter ulExcel = new UltraGridExcelExporter();<br />
        Infragistics.Win.UltraWinGrid.UltraGridPrintDocument ulPrint = new Infragistics.Win.UltraWinGrid.UltraGridPrintDocument();<br />
        <br />
         <br />
        bool GridRightLeft;<br />
        string HeaderTitle;<br />
        string HeaderRightDetails;<br />
        string HeaderLeftDetails;<br />
<br />
        public GridUserControl()<br />
        {<br />
            InitializeComponent();<br />
            ulItasGrid.ContextMenuStrip = contextMenuStrip1;<br />
        }<br />
<br />
       public delegate void GridEventKeyDown(object sender,KeyEventArgs e);<br />
       public delegate void GridEventKeyUp(object sender, KeyEventArgs e);<br />
       public delegate void GridEventMouseDown(object sender, KeyEventArgs e);<br />
       public delegate void GridEventMouseClick(object sender, KeyEventArgs e);<br />
<br />
<br />
<br />
       <br />
        public bool GridRightToLeft<br />
        {<br />
            set<br />
            {<br />
                GridRightLeft = value;<br />
            }<br />
            get<br />
            {<br />
                return GridRightLeft;<br />
            }<br />
        }<br />
<br />
       <br />
        public string LeftDetails<br />
        {   <br />
            set<br />
            {<br />
                HeaderLeftDetails = value;<br />
            }<br />
            get<br />
            {<br />
                return HeaderLeftDetails;<br />
            }<br />
        }<br />
        public string RightDetails<br />
        {<br />
            set<br />
            {<br />
                HeaderRightDetails = value;<br />
            }<br />
            get<br />
            {<br />
                return HeaderRightDetails;<br />
            }<br />
        }<br />
        DataTable dt = new DataTable();<br />
        public DataTable DataTableSource<br />
        {   set<br />
            {<br />
            //    dt = value;<br />
            //    MessageBox.Show("Befor Set" + dt.Rows.Count.ToString() + " and Columns Count IS : " + value.Columns.Count.ToString());<br />
               ulGrid.DataSource = dt;<br />
            //    ulGrid.DataBind();<br />
            //    MessageBox.Show("After Set" + dt.Rows.Count.ToString() + " and Columns Count IS : " + value.Columns.Count.ToString());<br />
            }<br />
            <br />
                  <br />
            get<br />
            {<br />
                //dt = new DataTable();<br />
                //dt = DataTableSource;<br />
                //MessageBox.Show("Get Set" + dt.Rows.Count.ToString() + " and Columns Count IS : " + dt.Columns.Count.ToString());<br />
                return dt;<br />
            }<br />
            <br />
        }<br />
<br />
        //public object DataSource<br />
        //{<br />
        //    set<br />
        //    {<br />
        //        ulGrid.DataSource = value; <br />
        //    }<br />
        //    get<br />
        //    { return ulGrid.DataSource; }<br />
        //}<br />
<br />
        public object DataSource<br />
        {<br />
            get<br />
            {<br />
                return ulGrid.DataSource;<br />
            }<br />
            set<br />
            {<br />
                // bind the given datasource<br />
                ulGrid.DataSource = value;<br />
<br />
                try<br />
                {<br />
                    ulGrid.DataBind();<br />
                }<br />
                catch (Exception ex)<br />
                {<br />
                    throw new Exception(String.Format("Could not bind data to grid"));<br />
                }<br />
            }<br />
        }<br />
<br />
        public string DataMember<br />
        {<br />
            set { ulGrid.DataMember = value; }<br />
            get { return ulGrid.DataMember; }<br />
           <br />
        }<br />
<br />
<br />
<br />
        public string HeaderReport<br />
        {<br />
            set<br />
            {<br />
                HeaderTitle = value;<br />
            }<br />
            get<br />
            {<br />
                return HeaderTitle;<br />
            }<br />
        }<br />
<br />
        public AutoFitStyle AutoFit<br />
        {<br />
            set<br />
            {<br />
                this.ulItasGrid.DisplayLayout.AutoFitStyle = Infragistics.Win.UltraWinGrid.AutoFitStyle.ResizeAllColumns;<br />
            }<br />
            get<br />
            {<br />
                return this.ulItasGrid.DisplayLayout.AutoFitStyle;<br />
            }<br />
        }<br />
<br />
        public Color Appearance<br />
        {<br />
            set<br />
            { <br />
                     this.ulItasGrid.DisplayLayout.Appearance.BackColor = Color.White;<br />
            }<br />
            get { <br />
                 return  this.ulItasGrid.DisplayLayout.Appearance.BackColor;<br />
            }<br />
         }

and the code of the connection class for testing the grid:

<br />
<br />
using System;<br />
using System.Collections.Generic;<br />
using System.Linq;<br />
using System.Text;<br />
using System.Data.SqlClient;<br />
using System.Configuration;<br />
using System.Data;<br />
<br />
<br />
namespace testthegrid<br />
{<br />
    class Connection<br />
    {<br />
        SqlConnection ConnectionStr = new SqlConnection();<br />
<br />
        public Connection()<br />
        {<br />
            ConnectionStr.ConnectionString = "Data Source=.; Initial Catalog=GridExample;Integrated Security=SSPI";<br />
        }<br />
<br />
        public SqlConnection conn<br />
        {<br />
            get<br />
            {<br />
                return this.ConnectionStr;<br />
            }<br />
            set<br />
            {<br />
                this.ConnectionStr = value;<br />
            }<br />
        }<br />
<br />
<br />
        public void OpenConnection()<br />
        {<br />
            if (ConnectionStr.State != ConnectionState.Open)<br />
                ConnectionStr.Open();<br />
        }<br />
<br />
<br />
        public void CloseConnection()<br />
        {<br />
            try<br />
            {<br />
                if (ConnectionStr.State != ConnectionState.Closed)<br />
                    ConnectionStr.Close();<br />
            }<br />
            catch { }<br />
        }<br />
    }<br />
}<br />

and the code for testing the grid is:

<br />
<br />
namespace testthegrid<br />
{<br />
    public partial class Form1 : Form<br />
    {<br />
        private Connection connection = new Connection();<br />
        public Form1()<br />
        {<br />
            InitializeComponent();<br />
            FillGrid();<br />
        }<br />
        private void FillGrid()<br />
        {<br />
            connection.OpenConnection();<br />
            DataTable dt = new DataTable();<br />
            SqlDataAdapter da = new SqlDataAdapter("select * from AccountInfoA", connection.conn);<br />
            da.Fill(dt);<br />
            gridUserControl1.DataTableSource = dt;<br />
            connection.CloseConnection();<br />
<br />
        }<br />

there is no data appears in the grid
thanx a lot

Re: User control problem Data bind

Cedric Moonen22-Jul-09 2:43

Cedric Moonen

22-Jul-09 2:43

beesan wrote:
i make a user control on c#

If your question is related to C#, then please use the C# forum, not the C++ forum. Thanks.

Cédric Moonen
Software developer

Charting control [v2.0]
OpenGL game tutorial in C++

[mfc] ip address control

rahuljin22-Jul-09 1:21

22-Jul-09 1:21

hello,

i want to set the value of the ip address control from a string, say ip[100] which is read from a text file.

how this can be done ?

the text file contains ip like --- 127.0.0.1 or 111.111.11.1

Adam Roderick J22-Jul-09 2:17

Adam Roderick J

22-Jul-09 2:17

ULONG ulP = inet_addr(szIPAddress );

rahuljin22-Jul-09 8:01

22-Jul-09 8:01

i dont get, please explain.

i am using this code but it makes the mfc application crash.

len = strlen(fff);

if(strlen(fff) > 0 && strcmp(fff, "\n") != 0)
{
    while(fff[i] != '.')
    {
        c[j] = fff[i];
        j++;
        i++;
    }
    m1 = atoi(c);
    j = 0;
    i++;
    ZeroMemory(c, 3);

    while(fff[i] != '.')
    {
        c[j] = fff[i];
        j++;
        i++;
    }
    m2 = atoi(c);
    j = 0;
    i++;
    ZeroMemory(c, 3);

    while(fff[i] != '.')
    {
        c[j] = fff[i];
        j++;
        i++;
    }
    m3 = atoi(c);
    j = 0;
    i++;
    ZeroMemory(c, 3);

    while(len > i)
    {
        c[j] = fff[i];
        j++;
        i++;
    }
    m4 = atoi(c);
    j = 0;
    i++;
    ZeroMemory(c, 3);
    ipAdd.SetAddress(m1, m2, m3, m4);
}

bolivar12322-Jul-09 9:43

bolivar123

22-Jul-09 9:43

You may be over complicating the conversion of the 4 number parts of the IP address.

Try this instead:

int m1,m2,m3,m4;

sscanf(fff,"%d.%d.%d.%d",&m1,&m2,&m3,&m4);

ipAdd.SetAddress(m1,m2,m3,m4);

Of course, you'll need to validate the IP address is in the proper format.

rahuljin22-Jul-09 10:03

22-Jul-09 10:03

this method shows wrong ip in the ip address control.

bolivar12322-Jul-09 10:20

bolivar123

22-Jul-09 10:20

The variable fff must be a string only containing a valid IP address.

try this:

   LPSTR lpIPAddress = _T("127.0.0.1");
   int m1, m2, m3, m4;
   sscanf(lpIPAddress,"%d.%d.%d.%d",&m1,&m2,&m3,&m4);
   ipAdd.SetAddress(m1,m2,m3,m4);

//You should now see 127.0.0.1 in the IPAddress control

Make sure you're passing in just the IP address in the sscanf function.

rahuljin22-Jul-09 10:47

22-Jul-09 10:47

it is working now. since i am using

fileh.ReadString((LPTSTR)fff , 100);

therefore i have to use the following code for the correct result ---

swscanf((LPCTSTR)fff,_T("%d.%d.%d.%d"),&m1,&m2,&m3,&m4);

thanks for the help.

bolivar12322-Jul-09 11:07

bolivar123

22-Jul-09 11:07

You're welcome! Glad you got it working.

Big Grin | :-D