C / C++ / MFC

23-Oct-02 2:10

I though about creating a Edit window in my app that when called
at runtime would catch all OutputDebugStrings that my program was
making.

After some nosing about on MSDN about catching OutPutDebugStrings i
wrote a thread function as below and called it from a menu option. The
idea was to eventually create a small window that would be updated with
any OutPutDebugStrings that were caught.

<br />
UINT catchDebugString(LPVOID param)<br />
{<br />
	TCHAR myChar[1024];<br />
	DWORD dwProcessId = GetCurrentProcessId();<br />
	HANDLE hHandle = OpenProcess( PROCESS_ALL_ACCESS, false, dwProcessId );<br />
<br />
	if ( DebugActiveProcess( dwProcessId ) == 0 )<br />
        return 0;<br />
<br />
	DEBUG_EVENT de;<br />
    <br />
	while ( WaitForDebugEvent( &de, INFINITE ) )<br />
	{   <br />
		if ( de.dwDebugEventCode == OUTPUT_DEBUG_STRING_EVENT )<br />
		{<br />
			OUTPUT_DEBUG_STRING_INFO deStr = de.u.DebugString; <br />
<br />
   			ReadProcessMemory(hHandle, deStr.lpDebugStringData, myChar, 1024, NULL);<br />
		}<br />
	                     <br />
		if ( EXIT_PROCESS_DEBUG_EVENT == de.dwDebugEventCode )<br />
			break;<br />
<br />
		ContinueDebugEvent( de.dwProcessId, de.dwThreadId, DBG_CONTINUE );<br />
	}     <br />
<br />
	return 1;<br />
}<br />

All was well until i found out i cant call DebugActiveProcess( dwProcessId )
with my own process id , there by making it so i cant catch my own OutputDebugStrings.

I just wondered if anyone out there had any ideas of how i could overcome this
problem or if there is another way to catch OutputDebugStrings??

cheers

AdrianCooper me;
while(CKitchen::beerInFridge()) {
me.watchTV();
me.consumeBeer(myKitchen.getBeerCan());
}

jmkhael23-Oct-02 2:16

jmkhael

23-Oct-02 2:16

DebugView do that and lot more
http://www.sysinternals.com/ntw2k/freeware/debugview.shtml

U have to change ur process privilege to debug mode first if u still wanna do it Smile | :)

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

adrian cooper23-Oct-02 3:55

23-Oct-02 3:55

hey there papa... yes i am aware of debug output viewer applications but want to do this programatically..

AdrianCooper me;
while(CKitchen::beerInFridge()) {
me.watchTV();
me.consumeBeer(myKitchen.getBeerCan());
}

Daniel Turini23-Oct-02 4:38

Daniel Turini

23-Oct-02 4:38

Try these sources:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vcsample98/html/vcsmpdbmon.asp[^]

Q261186 - Computer Randomly Plays Classical Music

adrian cooper23-Oct-02 5:00

23-Oct-02 5:00

cheers mate... I'll have a look at that, as it looks like it will provide valuable info for me..

AdrianCooper me;
while(CKitchen::beerInFridge()) {
me.watchTV();
me.consumeBeer(myKitchen.getBeerCan());
}

Joaquín M López Muñoz23-Oct-02 4:20

Joaquín M López Muñoz

23-Oct-02 4:20

Maybe Ivo Ivanov's API hooking revealed[^] can be of help here.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

adrian cooper23-Oct-02 5:01

Help on drawing a CButton in an ActiveX control

23-Oct-02 5:01

cheers Joaquín.. Im just having a quick read now

AdrianCooper me;
while(CKitchen::beerInFridge()) {
me.watchTV();
me.consumeBeer(myKitchen.getBeerCan());
}

J.Sheets23-Oct-02 1:31

J.Sheets

23-Oct-02 1:31

I'm trying to draw a button and an ip address area in my active x control.

I thought I could just use the ResourceView->Dialog to add the components visually, but evidently that only allows you to manipulate the property and about box areas for activex programs.

So... my question is how do I draw, say, a simple CButton in the ondraw area of my control?

something like:

void CAChatCtrl::ondraw(CDC* pdc, const CRect& rcBounds, const CRect& rcInvalid)
{   
   CButton testButton = new Button();   
   CRect bBounds = new CRect( rcBounds->r - 30, rcBounds->b - 30, rcBounds->r, rcBounds->b );
   testButton::Create("DrawnButon",BS_DEFPUSHBUTTON,bBounds,?,??);
}

Thanks for any help

GetLast Error and Watch window

adrian cooper23-Oct-02 1:15

FlexGrid "Unsupported operation"?!

23-Oct-02 1:15

Hey there guys... Just found out that if you want to get the last error of api calls then just type:

@err,hr

into the watch window... A very useful tip i thought and saves you programaticaly calling the the GetLastError api function!

AdrianCooper me;
while(CKitchen::beerInFridge()) {
me.watchTV();
me.consumeBeer(myKitchen.getBeerCan());
}

paulccc22-Oct-02 22:50

paulccc

22-Oct-02 22:50

Hi,

I've got an app (running under Win2k) with a flexgrid control in. It works fine under an Administrator, but as a normal user we have the following:

PROBLEM - Running on machines that haven't previously had msflxgrd.ocx installed results in an "Unsupported operation" message box when we try loading the app.

We are using Installer 1.1, and have tried using the flexgrid merge module, as well as distributing msflxgrd.ocx by hand.

We have definitely tried 'regsvr32 msflxgrd.ocx' too!!!!!

I've used OLEView to look at the ocx registration details. Under and administrator, it can view all the details and expand the interface leaves fine. Under a normal user it can't get any details about the ocx. It just gives the error:

"CoGetClassObject failed.
Class not registered
REGDB_E_CLASSNOTREG ($80040154)"

On machines that already have msflxgrd.ocx, it seems to work fine.

Anyone have any ideas?

TIA,

Paul.

Re: FlexGrid "Unsupported operation"?!

benjymous23-Oct-02 0:51

benjymous

23-Oct-02 0:51

could it be that the ocx isn't getting installed properly? (i.e. the administor can read the file, but normal users can't)

--
Help me! I'm turning into a grapefruit!

CTabCtrl in a Dialog Bar

stevenoliver22-Oct-02 22:47

22-Oct-02 22:47

Can anyone explain the process of using a CTabCtrl in a Dialog Bar. I understand the process of how tab controls work and have found away to use them in dialog boxes, but i cannot work out how to use them in a dialog bar

your help would be gratefully appreciated

thankyou

steven oliver

Ravi Bhavnani23-Oct-02 11:40

23-Oct-02 11:40

stevenoliver wrote:
cannot work out how to use them in a dialog bar

I would have thought it would be the same process as using it in a CDialog? I admit I haven't tried using it in a CDialogBar. Were you having a specific problem?

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

stevenoliver23-Oct-02 22:28

23-Oct-02 22:28

to get a dialog bar to work correctly you have to use the CMainFrame class and not a class of its own.
To use CtabCtlr in a normal dialog you create the tabs in WM_INITDIALOG. You cannot derive WM_INIDIALOG from CMainFrame.
I am not sure which handler to use, in this case
Is there an equivalent to WM_INITDIALOG for CMainFrame??

steven

Ravi Bhavnani24-Oct-02 1:35

24-Oct-02 1:35

Ah. You could post a custom message (IDC_INIT_TABCTRL) to the dialog bar the first time it's shown, and initialize the tab control in the handler for IDC_INIT_TABCTRL.

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

stevenoliver24-Oct-02 1:40

24-Oct-02 1:40

thankyou.
sorry for my ignorance, i am still fairly new to mfc. Could you possibly explain how i go about doing this?

thankyou

steven oliver
Big Grin | :-D

Ravi Bhavnani24-Oct-02 1:45

24-Oct-02 1:45

I think my earlier response was sorta misleading (I'm not fully awake). Just override your dialog bar's OnShowWindow() and add this logic to it (after calling the base class handler):

if (!m_bTabCtrlInitialized) {
    // Add tabs to tab control here
    ...;

    m_bTabCtrlInitialized = true;
}

m_bTabCtrlInitialized is a bool member that's initialized to false in your dialog bar's constructor.

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

stevenoliver24-Oct-02 1:49

24-Oct-02 1:49

i also cannot create a member variable for the tab control in CMainFrame. How do i go about doing that?

thankyou

steven

Ravi Bhavnani24-Oct-02 1:54

24-Oct-02 1:54

The tab control is a member of the dialog bar, not the mainframe. The mainframe is a container window and isn't associated with a dialog resource.

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

Ravi Bhavnani24-Oct-02 7:02