C / C++ / MFC Discussion Boards

Re: how to change window's start button text? problem with my program

ELY M.25-May-05 9:07

25-May-05 9:07

--------------------Configuration: Start_Button_Changer - Win32 Debug--------------------
Compiling...
Start_Button_ChangerDlg.cpp
C:\-= My Stuff =-\Start_Button_Changer\Start_Button_ChangerDlg.cpp(186) : error C2660: 'SetWindowTextA' : function does not take 2 parameters
Error executing cl.exe.

Start_Button_Changer.exe - 1 error(s), 0 warning(s)

Re: how to change window's start button text? problem with my program

David Crow25-May-05 9:11

David Crow

25-May-05 9:11

The compiler is telling you exactly what the problem is. You are trying to use CWnd::SetWindowText() which does not take 2 parameters.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: how to change window's start button text? problem with my program

ELY M.27-May-05 15:14

ELY M.

27-May-05 15:14

I got it working now

now Im trying to get working with the user defined edit box.

I use control CEdit for the edit box.

void CStart_Button_ChangerDlg::OnText()
{

HWND hWnd;
RECT rc;

if (hWnd = FindWindowEx(NULL, NULL, "Shell_TrayWnd", NULL)) {
::GetWindowRect(hWnd, &rc);
if (hWnd = FindWindowEx(hWnd, NULL, "Button", NULL)) {

/*
CEdit* text = (CEdit*)GetDlgItem(IDC_EDIT1);
CString gettext;
text->GetWindowText(gettext);
*/

CString starttext;
m_text.GetWindowText(starttext);

::SendMessage(hWnd, WM_SETTEXT, 0, (LPARAM)(LPTSTR) TEXT(starttext));

}
}

}

compile error:

Compiling...
Start_Button_ChangerDlg.cpp
C:\-= My Stuff =-\Start_Button_Changer2\Start_Button_ChangerDlg.cpp(199) : error C2440: 'type cast' : cannot convert from 'class CString' to 'char *'
No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
Error executing cl.exe.

Start_Button_Changer.exe - 1 error(s), 0 warning(s)

Re: how to change window's start button text? problem with my program

ELY M.27-May-05 15:27

ELY M.

27-May-05 15:27

never mind

I got it working...

I had to change the LPTSTR to LPCTSTR

Find out if user logged in?

jaycush25-May-05 7:09

jaycush

25-May-05 7:09

Hi everyone.

I'm writing a service that periodically launches a GUI program. I want to check to make sure someone is logged on to the computer before i launch the program so it can interact with the desktop. Is there any easy way to do this? Thank you very much.

Jay

Re: Find out if user logged in?

David Crow25-May-05 10:43

David Crow

25-May-05 10:43

How about NetWkstaUserGetInfo()?

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: Find out if user logged in?

CodeBeetle26-May-05 7:01

CodeBeetle

26-May-05 7:01

if u use OpenInputDesktop() and it returns NULL then the interactive desktop is not available. ie: no-one is currently logged on or "using" the computer.

CodeBeetle.Com

Exit an application

Gagnon Claude25-May-05 5:51

Gagnon Claude

25-May-05 5:51

Hi,
I program with Visual C++ .NET 2003.

I have an application that I want to quit if a specific date is passed. (the user will not choose Quit in the menu)

I want to terminate the application in the OnClose member function of my CApplicationView class.

I have tried with various methods like PostMessage(WM_DESTROY, 0, 0) or PostQuitMessage(0) without success.

Does anybody have suggestions ?

Thanks,

Claude

Re: Exit an application

BlackDice25-May-05 6:22

BlackDice

25-May-05 6:22

exit() ?

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BlackDice

Re: Exit an application

Ivan Cachicatari25-May-05 8:21

Ivan Cachicatari

25-May-05 8:21

Try with this code.

PostMessage(WM_COMMAND,ID_APP_EXIT);

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www.latindevelopers.com

Re: Exit an application

David Crow25-May-05 9:15

David Crow

25-May-05 9:15

The correct method is PostMessage(WM_CLOSE).

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: Exit an application

ThatsAlok25-May-05 20:56

ThatsAlok

25-May-05 20:56

You can try PostMessage(WM_QUIT,0,0) too.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

Sql - Connection Problem

M.Mehrdad.M25-May-05 5:20

M.Mehrdad.M

25-May-05 5:20

I am writing a real-time communication software whit VC++7 (App Type is Win32 Console)this is my first experince whit SQL in a heavy program.
I Open DataBase with CDataBase.OpenEX() in the beginning of program and Close it in the end.This program must run for several days or weeks each time and in each second i makeseveral transactions using CDataBase.ExecuteSql() and CRecordSet.GetFieldValue()
My Question Is, Can I Depend on Validity of Sql Connection for several days(I Guess not!),If not What Kind of Handling Required?
I can Not Open and Close DataBase each Time ineed it, Because of Real Time feature of
My Program.
Yours, Mehrdad Confused | :confused:

Re: Sql - Connection Problem

BlackDice25-May-05 6:25

BlackDice

25-May-05 6:25

I don't think you can count on the connection remaining open for that long a period if the app is on a different machine than the database. what I did in one of my apps was to check for that specific error that indicates the connection is not open, then try to re-open the connection without sending the user any indication. if the re-open fails, then I let the error message continue as usual

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unsigned int to unsigned int64

nellutla25-May-05 5:09

nellutla

25-May-05 5:09

how to typecast unsigned int(void *) to unsigned int64?

Please help me.

Heaven's on me

Re: unsigned int to unsigned int64

toxcct25-May-05 5:28

toxcct

25-May-05 5:28

i'm not sure i understand you.

what does a void* make here ??

TOXCCT >>> GEII power
[toxcct][VisualCalc]

ATL SINGLETON: acessing instance directly in server

peterchen25-May-05 4:48

peterchen

25-May-05 4:48

Hi,

I have an ATL COM object with DECLARE_CLASSFACTORY_SINGLETON

is there a way to access the singleton instance inside the serverdirectly?
(currently I'm using CoCreateInstance, but the registry/DllGetClassObject round trip seems not necessary)

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Accessing OnDraw() of view in splitter windows :^)

nripun25-May-05 2:06

nripun

25-May-05 2:06

I created two static horizontal panes using CreateStatic() function of CSplitterWnd class. The view class of the top pane is derived from CView and the bottom pane from CScrollView. The message mapping of the menu items is performed in CMainFrame as it cannot be done directly from both the view classes(Atleast it seems like that). The problem is wheni call Invalidate(TRUE) in one of the functions of the View class it gives a runtime error.

BOOL CMainFrame::OnCreateClient(LPCREATESTRUCT /*lpcs*/,<br />
	CCreateContext* pContext)<br />
{	<br />
	VERIFY(m_wndSplitter.CreateStatic(this, 2, 1));<br />
<br />
    VERIFY(m_wndSplitter.CreateView(0, 0, RUNTIME_CLASS(CTitleView),<br />
                                    CSize(100, 100), pContext));<br />
    VERIFY(m_wndSplitter.CreateView(1, 0, RUNTIME_CLASS(CTrialView),<br />
                                    CSize(100, 100), pContext));<br />
	m_wndSplitter.SetRowInfo(0,50,50);<br />
    return TRUE;<br />
}

As u can see from the above code i created a splitter window. CTitleView is derived from CView and CTrialView from CScrollView.

void CMainFrame::OnFileOpen() <br />
{<br />
	// TODO: Add your command handler code here<br />
	m_pTrialView.OnFileOpen();<br />
}

m_pTrialView is an object of CTrialView. It is used to call the function FileOpen in CTrialView.

void CFaceRecognizerView::OnFileOpen()<br />
{<br />
              Invalidate(TRUE);<br />
}

void CFaceRecognizerView::OnDraw(CDC* pDC)<br />
{<br />
	CFaceRecognizerDoc* pDoc = GetDocument();<br />
	ASSERT_VALID(pDoc);<br />
	if(flag==1)<br />
		AfxMessageBox("HI");<br />
}

This is where the error comes. My aim is to access the OnDraw() function. Hopw someone can help me out of this

Re: Accessing OnDraw() of view in splitter windows :^)

Jaime Olivares25-May-05 11:10

Jaime Olivares

25-May-05 11:10

When working with Doc/View framework, is it better to call UpdateAllViews from doc objects instead of trying to repaint views themselves.

Jaime

.hh format

prat7825-May-05 0:55

prat78

25-May-05 0:55

hello everyone
i wanted to know what exactly is the .hh file formats.are they the header file extensions.
one can see a lot of these files used like header files for the cpp files
this website has programs which use these file formats.
http://www.mip.informatik.uni-kiel.de/~wwwadmin/Software/Doc/BIAS/html/files.html

Re: .hh format

toxcct25-May-05 1:22

toxcct

25-May-05 1:22

looking at their content, it seems that they are headers to...
moreover, you can find such code lines, that explicit what i thought :

#include <Base/Debug/Error.hh>

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Re: .hh format

prat7825-May-05 2:52

prat78

25-May-05 2:52

why would one use such an extension when we have a .h extension header ?

Re: .hh format

toxcct25-May-05 2:58

toxcct

25-May-05 2:58

good question... but as we cannot ask to them directly...

we probably will never know

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Re: .hh format

jmkhael25-May-05 3:46

jmkhael

25-May-05 3:46

.hpp / .h++ / .hxx / .hh for C++ headers.
.h should be reserved for C headers
This is not respected though

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

std::wstring to std::string conversion

Franz Klein25-May-05 0:33

Franz Klein

25-May-05 0:33

How does one convert from std::wstring to std::string?

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