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Converting an array of glyph indices to string

Member 70956413-Jul-10 23:51

13-Jul-10 23:51

Hi All,

I am hooking the ExtTextOutW to capture data before it is displayed on the screen. I use Detours and created a dll and I inject it into an application before it starts.

The hooking works as expected, the problem I face is in the string parameter that is passed to the ExtTextOutW function.

When I log the value of this string to a file, it prints some garbled values. I have been trying to find out why this happens and I found out that it is due to glyphs, fonts and unicode.

The application I want to hook will use only English characters, so I want to convert the glyph values into regular characters so that I can log the English characters that is to be displayed on the screen and not some garbled values that come in the string parameter.

I searched on the internet and I came across a post on this forum

http://www.codeproject.com/Messages/446094/Re-Could-not-hook-proc-CreateWindowExA.aspx[^]

Right now I am unable to purchase the book, so can someone please tell me how I can accomplish converting glyph to a string as Ivo Ivanov as mentioned. Ivo Ivanov, if you are reading this can you please help me.

Thanks,
mich

Re: Converting an array of glyph indices to string

Richard MacCutchan14-Jul-10 1:07

Richard MacCutchan

14-Jul-10 1:07

Try posting your question in the forum at the end of the article and the author will be notified.

It's time for a new signature.

How to Move an MFC Button. [modified]

lgmanuel13-Jul-10 22:58

13-Jul-10 22:58

hi, I am new to VC++ MFC, i am trying to create a simple app. using MS Visual Studio 2005.

i want to move three button to scroll left when i click the left button, same if i click the right button, it should scroll right. then it will stop if i click the center button.

but i don't know how to start the code part, all did was to create the GUI.

the Design looks like this..

Check URL to view ScreenShot.

http://h1.ripway.com/lgmanuel/Imgs/gui.png

modified on Wednesday, July 14, 2010 5:04 AM

Re: How to Move an MFC Button.

Niklas L13-Jul-10 23:04

13-Jul-10 23:04

Use a timer[^] for the updates and call SetWindowPos()[^] or MoveWindow()[^] to move the buttons.

Re: How to Move an MFC Button.

lgmanuel13-Jul-10 23:09

13-Jul-10 23:09

thank you for that info., but i am a total new to VC++ MFC,.

where do i put the code. should i just double click the button and add the code like Visual Basic do?

Re: How to Move an MFC Button.

Niklas L13-Jul-10 23:13

13-Jul-10 23:13

Pretty much.

Re: How to Move an MFC Button.

Cedric Moonen13-Jul-10 23:13

13-Jul-10 23:13

You should really buy a book about VC++. It is nearly impossible to help someone who has almost no knowledge of VC++ or C++ through a forum. It will take ages to explain some basic concepts. You will be much more efficient by reading a book first.

Cédric Moonen
Software developer

Charting control [v3.0]
OpenGL game tutorial in C++

Re: How to Move an MFC Button.

lgmanuel13-Jul-10 23:20

13-Jul-10 23:20

i think that's the best thing to do for now?.. read a book and understand the concepts and terminology used in VC++. anyway, thanks for the advice.

Re: How to Move an MFC Button.

Niklas L14-Jul-10 0:57

14-Jul-10 0:57

How did you end up in this situation anyway? Did you spice up your CV?

Re: How to Move an MFC Button.

lgmanuel13-Jul-10 23:38

13-Jul-10 23:38

by the way, here is the app. that i was trying create. you can download the project and check it, it's just a design and no codes yet, i just named the controls to their ID's..

what i am tring to do is move the three buttons until they are totally out the the app window..

thanks for the help guys, appreciate it.

here is the URL to download the project.
http://h1.ripway.com/lgmanuel/VC MFC/MoveTheButton.rar

Re: How to Move an MFC Button.

ThatsAlok1-Jun-11 21:30

1-Jun-11 21:30

who the f*** voted you down here! let me even it

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
Never mind - my own stupidity is the source of every "problem" - Mixture

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

Re: How to Move an MFC Button.

lgmanuel13-Jul-10 23:16

13-Jul-10 23:16

and how do i get the current coordinates of the three buttons?

Re: How to Move an MFC Button.

Niklas L13-Jul-10 23:35

13-Jul-10 23:35

Using GetWindowRect()[^]

And then convert to client coords using ScreenToClient()[^]

Re: How to Move an MFC Button.

lgmanuel13-Jul-10 23:43

13-Jul-10 23:43

..... update

by the way, here is the app. that i was trying create. you can download the project and check it, it's just a design and no codes yet, i just named the controls to their ID's..

what i am tring to do is move the three buttons until they are totally out the the app window..

thanks for the help guys, appreciate it.

here is the URL to download the project.
http://h1.ripway.com/lgmanuel/VC MFC/MoveTheButton.rar

Re: How to Move an MFC Button.

bolivar12314-Jul-10 3:21

14-Jul-10 3:21

Why not leave the buttons where they are and simply call ShowWindow(SW_HIDE) on each of the buttons?

Such as:

<br />
GetDlgItem(IDC_BUTTON1)->ShowWindow(SW_HIDE);<br />
GetDlgItem(IDC_BUTTON2)->ShowWindow(SW_HIDE);<br />
GetDlgItem(IDC_BUTTON3)->ShowWindow(SW_HIDE);<br />

Then somewhere else in your program if you want to show the buttons again:

<br />
GetDlgItem(IDC_BUTTON1)->ShowWindow(SW_SHOW);<br />
GetDlgItem(IDC_BUTTON2)->ShowWindow(SW_SHOW);<br />
GetDlgItem(IDC_BUTTON3)->ShowWindow(SW_SHOW);<br />

Re: How to Move an MFC Button.

lgmanuel18-Jul-10 17:50

18-Jul-10 17:50

there is no need for hiding the controls., i got an idea that if the LEFT button is clicked, it scrolls all the way to the left until the three buttons are gone, then it shows up on the right side of the app window, likewise with the right button. then it should stop to where the three buttons are if the center button is prssed.

Like the <marquee> tag in HTML, it just scrolls to the direction, then shows up to the other side..

i think but am not sure if i need to get the coordinates?

need help guys. thanks..

Re: How to Move an MFC Button.

merano14-Jul-10 12:54

14-Jul-10 12:54

The link does not work. Do you have a Solution ?

Re: How to Move an MFC Button.

lgmanuel18-Jul-10 17:52

18-Jul-10 17:52

http://h1.ripway.com/lgmanuel/VisualCPP/MoveTheButton.rar[^]

here is the link, sorry if the previous link did not work.. i renamed the directory..

Re: How to Move an MFC Button.

merano19-Jul-10 2:06

19-Jul-10 2:06

Yes that will do the job.

Found an easy TODO for the Timer-Part here ("Using Timers in MFC Applications")

In our Sample it would look like this:

First update your class in MoveTheButtonDlg.h
(Some work is already done by VisualStudio when clicking the Button)

enum {DIR_STOP, DIR_LEFT, DIR_RIGHT};

// CMoveTheButtonDlg dialog
class CMoveTheButtonDlg : public CDialog
{

   ...

	DECLARE_MESSAGE_MAP()
public:
	afx_msg void OnBnClickedMoveright();
	afx_msg void OnBnClickedStop();
	afx_msg void OnBnClickedMoveleft();
	afx_msg void OnTimer(UINT TimerVal);  // TI: Add timer handler to messagemap

private:
	BOOL StartTimer (UINT TimerDuration);
	BOOL StopTimer(void);

    UINT_PTR m_nTimer;
    UINT  m_Direction;
    DWORD m_winpos;
};

After that you have to declare Message-Map:

BEGIN_MESSAGE_MAP(CMoveTheButtonDlg, CDialog)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
	ON_BN_CLICKED(IDC_MoveRight, &CMoveTheButtonDlg::OnBnClickedMoveright)
	ON_BN_CLICKED(IDC_Stop, &CMoveTheButtonDlg::OnBnClickedStop)
	ON_BN_CLICKED(IDC_MoveLeft, &CMoveTheButtonDlg::OnBnClickedMoveleft)
	ON_WM_TIMER ( )  // TI: timer implementation
END_MESSAGE_MAP()

At last the new members have do be defined:

void CMoveTheButtonDlg::OnBnClickedStop()
{
	m_Direction = DIR_STOP; 
	StopTimer();
}

void CMoveTheButtonDlg::OnBnClickedMoveright()
{
	m_Direction = DIR_RIGHT;
	StartTimer(1000);
}

void CMoveTheButtonDlg::OnBnClickedMoveleft()
{
	m_Direction = DIR_LEFT;
	StartTimer(1000);
}

BOOL  CMoveTheButtonDlg::StartTimer (UINT TimerDuration)
{
   m_nTimer = SetTimer (IDT_TIMER_0, TimerDuration, NULL);

   if ( m_nTimer == 0) {
      MessageBox (_T("Unable to obtain timer"), _T("IDT_TIMER_0"), MB_OK|MB_SYSTEMMODAL);
      return FALSE;
   }

  return TRUE;
}// end StartTimer

BOOL CMoveTheButtonDlg::StopTimer(void)
{
	if(m_nTimer) {
       //  Stop the timer
       if (!KillTimer (m_nTimer)) {
         return FALSE;
       m_nTimer = 0;
       }
	}

    return TRUE;
} // end StopTimer


void  CMoveTheButtonDlg::OnTimer (UINT TimerVal)
{
	if(TimerVal != m_nTimer)  // TI: check what timer
		return;

	switch(m_Direction) {
	case DIR_LEFT:
		// TI: move to left here
		m_winpos-=5;
		break;
		
	case DIR_RIGHT:
		// TI: move to right here
		m_winpos+=5;
		break;
    }
}

I hope you can do the rest at "TI: move to ... " at your own

Re: How to Move an MFC Button.

lgmanuel19-Jul-10 19:13

19-Jul-10 19:13

this is a step forward.. thanks.. i just thought maybe i needed timers, then poof.. a sample code.. thanks..
just have to modify the code to fit my needs..

but am still having trouble moving the buttons., a trying to work how to move i now?

Re: How to Move an MFC Button.

lgmanuel19-Jul-10 19:18

19-Jul-10 19:18

hi, i have another question?

am trying to connect two computers on the network whit the same App that i created, how do i connect these 2? it should prompt the user that the connection is successful?

help guys. thanks

Re: How to Move an MFC Button.

lgmanuel19-Jul-10 20:41

19-Jul-10 20:41

how do i disable the left and right button when the window load.. and enable it back when press the center button?

Re: How to Move an MFC Button.

merano19-Jul-10 22:11

19-Jul-10 22:11

You already have the very good hint from Niklas Lindquist 14Jul'10.

SetWindowPos()[^] or MoveWindow()[^] to move the buttons

Every Button is based on a Window and SetWindowPos() can do everything
with the button (even hide it) if you are able to get the CWnd-handle.

See Example:

void CWinApp::HideApplication()

On the MSDN Online-Page (linked also by Niklas Lindquist) you really
should start to read MFC doku (See advice of Cedric Moonen).

You can get hints from the Forum, but nobody will do the complete work
for you.

What is the complete Funktion of your Application ?

-If you want networkfunktions you will probably get Timing an Sync Problems.

You can send every Button a message to get the same result as if you
pressed it, but over Network you will not see the monitor. You have to
find a way to send the results back to every client and display it.

Re: How to Move an MFC Button.

lgmanuel19-Jul-10 22:40

19-Jul-10 22:40

yup., one of my nerd friends is helping on the networking side of the app.. needs to read about Socket Buffer and Listening..

anyways., got a lot of hints from you guys on how to start my C++ adventure, hope it works for me.,

am trying to change my programming path from VB to C++., i wish myself good luck.

Thank you again.

regular expressins performance

yftah198913-Jul-10 22:20

13-Jul-10 22:20

I'm creating a new program. The ONLY thing which is important for me is the running time of the program. Should I use a regular expressions, or maybe should I write my own search code?

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