C / C++ / MFC

6-May-03 6:01

Hi ppl

I have written 6 C programs and I now want to make a GUI, I am using Windows API, writing in C, using DEV C++ as compiler running on Windows XP

I have already create da main window and 6 child windows

Actually I want to display the text output of these 6 C programs on the screens of the child windows. And I planned to simply execute the .exe of the C programs in the child windows

But now I got the problem that I cannot simply execute the C programs in the child windows as I want to display the outputs to the child windows, I have to make a communication between the C program and the child window in the GUI program

As I said I created 6 child windows, each of them are for a particular
C program that I mentioned above. So for like I have program A B C D E F, and child windows A B C D E F. Then the outputs of program A will be displayed in child window A, and then program B for child window B...etc.

These 6 programs are actually written to be run in UNIX environment, it's just I think I should make a nice looking little application window to group these 6 windows. And I don't want console windows...black and grey. And so actually these 6 C programs are very much about text input and output. And to be precise, 5 of them only have outputs and only one has input, and it's like this

printf("Please enter input\n");
getchar();

So I don't even have to monitor the input like mouse input in many of the application windows, I know when to get input.

So my question is how do I make the C programs to communicate with the GUI program so that the outputs will be displayed on the child windows and get the input from the child windows.

Very desparate for some help here. Hope u guyz can give me some hints. =)
Thank you very much!!
Franky

fRaNkLy i'm FrAnKy

David Crow6-May-03 6:12

6-May-03 6:12

You'll want to create the processes with CreateProcess(). Then you'll want to read what is written to the STARTUPINFO.hStdOutput handle.

See if MSDN article Q190351 helps.

franklyflee6-May-03 6:52

6-May-03 6:52

Sorry to ask anothe stupid question, but can you give me the link? Bcoz I searched from google "msdn article Q190351" but couldn't find it...
Thanz Big Grin | :-D

fRaNkLy i'm FrAnKy

[edit]
Oh sorry...hehe...I got it now...me looking at it now
Thanz really!! Smile | :)

David Crow6-May-03 6:57

6-May-03 6:57

Just search for Q190351. It's a fairly unique "word" in and of itself.

http://support.microsoft.com/default.aspx?scid=http://support.microsoft.com:80/support/kb/articles/q190/3/51.asp&NoWebContent=1[^]

franklyflee6-May-03 7:18

6-May-03 7:18

Oh so is that I will use that standard input and output handles in the Windows API program? Bcoz I see both of the programs there in the source codes are main(), so I am not sure if it is redirecting the I/Os from console to the windows API.

Actually I'm quite new to windows API, so plz forgive my ignorance if I have asked some very dumb questions. Big Grin | :-D

Thanz

fRaNkLy i'm FrAnKy

franklyflee6-May-03 15:12

6-May-03 15:12

OK...I think I have resorted to use a individual window for a program

I mean one window application for one console program...

But I still have problems even making that....how do I ouput the text?
I know I have to use the function TextOut but ...should I simply replace all the "printf" with "TextOut" or there is extra workings?

Thanz!! Smile | :)

fRaNkLy i'm FrAnKy

franklyflee6-May-03 16:14

Need to create Document and Excel in vc++

6-May-03 16:14

Anyone got any idea of how to group these windows together? Like the "tile" action of the window or sth...I really want to group the 6 windows...at least closer I mean...it's really ugly and messy to have 6 console windows spreading all over the screen....

Thanz really!! Smile | :)

fRaNkLy i'm FrAnKy

unicode

alex.barylski6-May-03 5:42

alex.barylski

6-May-03 5:42

How would one add unicode support to a text editor control that uses CString for a buffer?

Would the control already have implicit unicode support?

GDI functions like DrawText() will automatically be converted to DrawTextW or DrawTextA depening on _UNICODE define???

I've never bothered much with unicode and figure i should start Smile | :)

Thanks

"Two wrongs don't make a right, but three lefts do!" - Alex Barylski Smile | :)

Re: unicode

Phil Hamer6-May-03 13:34

Phil Hamer

6-May-03 13:34

There's lots of good tutorials on Unicode and Windows programming. Check those out, but basically you would define _UNICODE in your Project/Settings, and in place of "char" use "wchar_t", and string literals have "L" before them (e.g., L"a string"). But the best way is to use the "tchar.h" file's macros so that you don't have to change your source code when you change back and forth from _UNICODE to _MBCS. (use "TCHAR" instead of "char", and wrap string literals with the _T() macro (e.g., _T("a string")).

Re: unicode

alex.barylski6-May-03 14:47

alex.barylski

6-May-03 14:47

Very cool...

Thanks Smile | :)

"Two wrongs don't make a right, but three lefts do!" - Alex Barylski Smile | :)

harinath6-May-03 5:24

harinath

6-May-03 5:24

Hi, I want to create word document and excel documents through vc++ programs for dynamic data that i get from some data base.
I am just beginning, Any body who knows this please do help me.

cheers
harinath

Harinath Reddy
HOneywell Technology Solutions Lab,
Bangalore,
India-560076
harinath@vandemataram.com

David Crow6-May-03 5:38

6-May-03 5:38

Use OLE Automation. Here's an Excel example:

_Application    app;
Workbooks       books;
_Workbook       book;
Worksheets      sheets;
_Worksheet      sheet;
Range           range;
COleVariant     vtOptional((long) DISP_E_PARAMNOTFOUND, VT_ERROR),
                vtTrue((short) TRUE),
                vtFalse((short) FALSE);
CString         strText;


if (app.CreateDispatch("Excel.Application") == TRUE)
{
    app.SetVisible(TRUE);

    books = app.GetWorkbooks();

    book = books.Add(vtOptional);

    sheets = book.GetSheets();

    sheet = sheets.GetItem(COleVariant((short) 1));

    range = sheet.GetRange(COleVariant("A1"), COleVariant("A1"));
    m_ebCellA1.GetWindowText(strText);
    range.SetValue(COleVariant(strText));

    range = sheet.GetRange(COleVariant("A2"), COleVariant("A2"));
    m_ebCellA2.GetWindowText(strText);
    range.SetValue(COleVariant(strText));

    range = sheet.GetRange(COleVariant("A4"), COleVariant("A4"));
    range.SetFormula(COleVariant("=A1 + A2"));
}

Here's a Word example:

CString         strFileName;
_Application    app;
Documents       docs;
_Document       doc;
COleVariant     vtOptional((long) DISP_E_PARAMNOTFOUND, VT_ERROR),
                vtFalse((short) FALSE),
                vtTrue((short) TRUE);


if (app.CreateDispatch("Word.Application") == TRUE)
{
    docs = app.GetDocuments();

    m_ebDocName.GetWindowText(strFileName);

    doc = docs.Open(COleVariant(strFileName), vtOptional, vtOptional, vtOptional, vtOptional, vtOptional, vtOptional, vtOptional, vtOptional, vtOptional, vtOptional, vtOptional);

    doc.PrintOut(vtFalse, vtOptional, vtOptional, vtOptional, vtOptional, vtOptional, vtOptional, vtOptional, vtOptional, vtOptional, vtOptional, vtOptional, vtOptional, vtOptional, vtOptional, vtOptional, vtOptional, vtOptional);

    while (app.GetBackgroundPrintingStatus() > 0)
        ;

    docs.Close(vtFalse, vtOptional, vtOptional);

    app.Quit(vtOptional, vtOptional, vtOptional);
}

Anonymous6-May-03 7:52

Anonymous

6-May-03 7:52

Wow, It is nice to see that my serving my purpose is not that tough.
thanks for the info,
thanks a lot.

cheers
mahanare Big Grin | :-D

Michael Pauli7-May-03 0:49

Michael Pauli

7-May-03 0:49

I agree - Automation is a way. BUT don't forget COM - it's much easier and less complicated then the snippets.

COM hides all the details.

If you are interested - contact me for an example using COM.

Regards
Michael Mogensen.
mm it-consult dk.

David Crow7-May-03 2:23

7-May-03 2:23

Michael Mogensen wrote:
Automation is a way. BUT don't forget COM - it's much easier and less complicated...

Automation and COM are not mutually exclusive. Remember that Automation is a technology based on the Component Object Model, that enables interoperability among components such as ActiveX. It makes it possible for one application to manipulate objects implemented in another application, or to "expose" objects so they can be manipulated by another.

Dimitris Vasiliadis6-May-03 7:39

Dimitris Vasiliadis

6-May-03 7:39

You could use ODBC and treat EXCEL sheets like tables.
Take a look at:
http://www.codeproject.com/database/excel_odbc_write.asp
http://www.codeproject.com/database/excel_odbc.asp

How to get all the controls in a CDialog?

harinath6-May-03 7:57

harinath

6-May-03 7:57

thank you,
I will this method then I will get back to you, If i get any more doubts.
thanks for the attention and the time you spared for me.

bye
harinath

Harinath Reddy
HOneywell Technology Solutions Lab,
Bangalore,
India-560076
harinath@vandemataram.com

melwyn6-May-03 5:19

melwyn

6-May-03 5:19

Hi,
Is there any way in which I could get all the controls that exist in a Dialog?
I went through most of the functions in CDialog and CWnd but couldn't find any.

Thanks in advance,
Melwyn

harinath6-May-03 5:22

harinath

6-May-03 5:22

This is how we have to do.
Read it, understand it and learn your self.

CWnd *pWnd = m_pPropertySheet->GetWindow(GW_CHILD);
CWnd *pWnd1 = NULL;
CWnd *pWnd2 = NULL;
CString cstrCaption;
while(pWnd) //get all the controls on the property sheet
{
pWnd->GetWindowText(cstrCaption);
if( _T("OK") == cstrCaption ) //get one with caption "OK"
pWnd1 = pWnd;
if( _T("Cancel") == cstrCaption )//get one with caption 'Cancel"
pWnd2 = pWnd;
pWnd = pWnd->GetNextWindow(); //go to next control
}
if( pWnd1)
{
pWnd1->DestroyWindow(); //remove OK button
}
if( pWnd2)
{
pWnd2->DestroyWindow(); //remove Cancel button
}
m_bOKCancelRemoved = TRUE;

Harinath Reddy
HOneywell Technology Solutions Lab,
Bangalore,
India-560076
harinath@vandemataram.com

basementman6-May-03 5:45

basementman

6-May-03 5:45

A little more friendly answer would be to look at the EnumChildWindows function. Let's say that you need to grey out all items on the dialog except the cancel button. This code would do that:

CMyDialog::DisableAllControls()
{
EnumChildWindows(GetSafeHwnd(),MyDisableProc,this);
}

// this is a static member fcn
BOOL CMyDialog::MyDisableProc(HWND hWnd, LPARAM lParam)
{
- CMyDialog *pDlg = (CMyDialog *)lParam;
-
- if (::GetDlgCtrlID(hWnd) != IDCANCEL)
- ::EnableWindow(hWnd,FALSE);
-
- return TRUE;
}

melwyn8-May-03 1:28

melwyn

8-May-03 1:28

Hi basementman,
Thanks for giving me an alternative solution.
Your example makes it very clear.

Any idea how EnumChildWindows()is different from a GetWindow()+FindWindow() loop?

Thanks and Regards,
Melwyn