C / C++ / MFC Discussion Boards

includeh104-Apr-06 19:24

4-Apr-06 19:24

try to display all chars on a control, such as CEdit, then use CEdit::PosFromChar(...) function to receive their positions.
or use CDC::GetTextExtent(...).

LOGFONT doesn't contain info about a specified character.

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Status Bar problem -> urgent please

RockyJames4-Apr-06 18:19

RockyJames

4-Apr-06 18:19

Hi,
I have taken and MDI application.CMainFrame class in OnCreate() function.
m_wndStatusBar.SetBorders(2,17,2,17);The height of the staus bar is increased as required,i have done this uisng VC.6...But when i did same thing in VC2005...the statusbar is drawn properly....is there any specific reason?.If i update my application from vc.6 to VC2005 will support new framework..? or is there any other to increase the height of the status bar, without changing the Font...

Thanks in before
Jamesrocky

-- modified at 0:53 Wednesday 5th April, 2006

Re: Status Bar problem -> urgent please

includeh104-Apr-06 18:59

includeh10

4-Apr-06 18:59

in VC6, "the staus bar is increased as required"
in VC2005, "the statusbar is drawn properly"

what is your problem?

Re: Status Bar problem -> urgent please

RockyJames4-Apr-06 19:20

RockyJames

4-Apr-06 19:20

Sorry in VC2005 its was not drawn properly....

Re: Status Bar problem -> urgent please

Hamid_RT4-Apr-06 19:37

Hamid_RT

4-Apr-06 19:37

Hi RockyJames,
what's your problem?Statusbar(Height)
CStatusBarCtrl maybe it is some helpful to you I'm not sure

Standalone application

Sendilkumar.M4-Apr-06 17:09

Sendilkumar.M

4-Apr-06 17:09

I want to develop some standalone application. That is without having Operation System boot loader has to load my application. Is that possible?

Smile | :)

M.Sendilkumar
Thomson

Re: Standalone application

Ștefan-Mihai MOGA4-Apr-06 20:51

Ștefan-Mihai MOGA

4-Apr-06 20:51

Sorry to say it, but I think that's impossible to do.
Do you want to create your own operating system for that?

Re: Standalone application

toxcct4-Apr-06 21:50

toxcct

4-Apr-06 21:50

of course that is possible !!

how do you think OS installer do ?

Re: Standalone application

toxcct4-Apr-06 21:52

toxcct

4-Apr-06 21:52

man, that's a big task you're asking about...

you may need to write a bootstrap from scratch !!

but as i don't know more about your project (target plateform, Proc SC, Dev IDE)...

Re: Standalone application

Sendilkumar.M5-Apr-06 17:44

Sendilkumar.M

5-Apr-06 17:44

Yeah,,That is what i want.How i can write bootstrap.Development tool and etc.. are not matter.Tell me is there any way that you know?

M.Sendilkumar

Re: Standalone application

toxcct5-Apr-06 21:28

toxcct

5-Apr-06 21:28

you have to peel your microprocessor's documentation and write the assembler code to what you need to do...
i cannot help you on this, as it is a very specific task.

Parallel Port I/O Library in C++

CNewbie4-Apr-06 16:45

CNewbie

4-Apr-06 16:45

Does anyone know where I can get information on writing a library (making a DLL of my own) for Parallel I/O Communication in C/C++?

Thanks

Re: Parallel Port I/O Library in C++

Ștefan-Mihai MOGA4-Apr-06 20:50

Ștefan-Mihai MOGA

4-Apr-06 20:50

If you need to access parallel ports in WIN32 use http://www.naughter.com/parallelport.html[^]
If you need to access serial ports in parallel use http://www.naughter.com/serialport.html[^]
I've use that in some applications, but now I use Ramon de Klein's Serial library for C++[^]

Catch the text of the Window Items

vtalau4-Apr-06 16:05

vtalau

4-Apr-06 16:05

When I move the mouse on the menu bar.For example ,the Help button ,how can I get the text"Help" of the button in MFC?

Re: Catch the text of the Window Items

Anilkumar K V4-Apr-06 18:34

Anilkumar K V

4-Apr-06 18:34

Some helpful API are
FindWindow
GetWindowText
GetClassName
GetWindowLong > GWL_STYLE

Re: Catch the text of the Window Items

Michael Dunn4-Apr-06 20:12

Michael Dunn

4-Apr-06 20:12

GetMenuString()

--Mike--
Visual C++ MVP Cool | :cool:

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exported class meets DoModal() error!

sting_lee4-Apr-06 16:01

sting_lee

4-Apr-06 16:01

Hey,friend.when I call the member func of the class exported from dll,like
MyClass.DoModal();
Dialog appears but when i click the "ok" button,the program abort and give out error message
"The Instruction at 'ox7800fa97' referenced memory at 'ox000007d6'. The memory could not be 'read'.
But,click "Cacel" button, It returns to main program,could you tell me what's wrong with my code?Thanks. Confused | :confused:

Lee

Key code question

EvScott4-Apr-06 15:42

EvScott

4-Apr-06 15:42

Hi all, I'd like to know how to access virtual key code values for keys such as @. and *. in C.

A code fragment I've written is as follows
LRESULT CALLBACK KeybProc( int nCode,WPARAM keyvalue, LPARAM lParam)
{
if (nCode != HC_NOREMOVE)
{
if (lParam<0)
{
if(keyvalue == VK_BACK)
{
char szBkKey[] = "<bkspkey>";
fileout<<szbkkey;
}
="" if(keyvalue="=" vk_return)
="" {
="" char="" szretkey[]="<RETURNKEY>" ;
="" fileout<<szretkey;
="" if="" (((keyvalue="">=0x41)&&(keyvalue<=0x5A))||(keyvalue==VK_SPACE))
{
etc....
}
}
}
}
This fragment stores values for values A..Z, a..z, 0..9 but doesn't record much else. Your help would be most appreciated.
ES

E Scott

-- modified at 21:43 Tuesday 4th April, 2006

Re: Key code question

Waldermort5-Apr-06 0:01

Waldermort

5-Apr-06 0:01

I'm not sure I quite understand your question, but it sounds like you want to know how to find out the VK code for a given key. If so here is a little cheat. Add an accelerator into your resource file, Each time you add a new row into the accelerator file, there is a button "Next Key Typed", press it and hit the key, it will show you the VK code.

Network Client Registry Question

u6ik4-Apr-06 15:22

u6ik

4-Apr-06 15:22

I want to allow networked PCs access to my server application. It has various parts and I want to tell the clients PCs where the address of the parts sit (a network address of the server folders). I can do it using a small install program run on each PC individually that inserts the server address of the files in the client PC registry but, is there a elegant way of letting the client PC use a remote program and access the server registry or the files local to the server.

Basically, from the client PC, if I run a program on the server can I retrieve data from the server registry rather than the local client registry.

Any thoughts?

Cheers Wink | ;)

u6ik

Re: Network Client Registry Question

kakan4-Apr-06 21:27

kakan

4-Apr-06 21:27

You can connect to a regirstry in a remote machine, provided you have got the proper acccess rights.
Check out RegConnectRegistry()

Re: Network Client Registry Question

u6ik4-Apr-06 21:59

u6ik

4-Apr-06 21:59

Perfect! Many thanks Big Grin | :-D

u6ik

Problem with the window handle m_hWnd

dannyham4-Apr-06 14:41

dannyham

4-Apr-06 14:41

I’m trying too passing a window handle from my application to an Interface
Software. The software will then send messages to my application. But it seems like no messages are sent at all. Its really strange though when I create another dialog (config window for my first window) in the first dialogs OnInitDialog(); function where I’m calling the Interface function it works. And then when I remove the code for the config dialog no message is sent.

Kind of hard to explain in words, here is the code that works:

:BOOL ClightswitchDlg::OnInitDialog()<br />
{<br />
  int retval;<br />
        CDialog::OnInitDialog();<br />
/*classic OnInit code<br />
 			*/       <br />
<br />
  hZigBee = new CZigBeeIf(); // The ZigBee Interface<br />
<br />
  retval = hZigBee->ZBIFConnect( m_hWnd ); // Find some hardware<br />
  <br />
<br />
  CConfigureDlg hConfigureDlg; // The Config Dialog<br />
  /* Config code<br />
*/<br />
       INT_PTR nResponse = hConfigureDlg.DoModal(); // Display the dialog<br />
  if (nResponse == IDCANCEL)<br />
        {<br />
    return FALSE; // Cancelled Config so just leave<br />
        }<br />
<br />
    // Subscribe to relevant Callbacks<br />
  hZigBee->ZBIFSubscribe( ZDO_SET_CONFIRM );<br />
  hZigBee->ZBIFSubscribe( ZDO_RESET_CONFIRM );<br />
  hZigBee->ZBIFSubscribe( ZDO_START_CONFIRM );<br />
  hZigBee->ZBIFSubscribe( ZDO_END_DEVICE_BIND_CONFIRM );<br />
  hZigBee->ZBIFSubscribe( AF_INDIRECT_CONFIRM );<br />
  hZigBee->ZBIFSubscribe( ZDO_NLME_SYNC_CONFIRM );<br />
<br />
  Sleep( 1000 ); // Let the stack start and the world sort itself out<br />
<br />
  hZigBee->ZDO_RESET_request( 0 ); // Send a reset into the stack<br />
  <br />
  <br />
  return TRUE;  <br />

And the same code without config dialog that doesn’t work:

BOOL ClightswitchDlg::OnInitDialog()<br />
{<br />
  int retval;<br />
        CDialog::OnInitDialog();<br />
/*classic OnInit code<br />
 			*/       <br />
<br />
        <br />
<br />
  hZigBee = new CZigBeeIf(); // The ZigBee If<br />
  <br />
  }<br />
<br />
  retval = hZigBee->ZBIFConnect( m_hWnd ); // Find some hardware<br />
  <br />
<br />
    // Subscribe to relevant Callbacks<br />
  hZigBee->ZBIFSubscribe( ZDO_SET_CONFIRM );<br />
  hZigBee->ZBIFSubscribe( ZDO_RESET_CONFIRM );<br />
  hZigBee->ZBIFSubscribe( ZDO_START_CONFIRM );<br />
  hZigBee->ZBIFSubscribe( ZDO_END_DEVICE_BIND_CONFIRM );<br />
  hZigBee->ZBIFSubscribe( AF_INDIRECT_CONFIRM );<br />
  hZigBee->ZBIFSubscribe( ZDO_NLME_SYNC_CONFIRM );<br />
<br />
  Sleep( 1000 ); // Let the stack start and the world sort itself out<br />
<br />
  hZigBee->ZDO_RESET_request( 0 ); // Send a reset into the stack<br />
  <br />
  return TRUE;  <br />
}

Re: Problem with the window handle m_hWnd

Giannakakis Kostas4-Apr-06 19:53

Giannakakis Kostas

4-Apr-06 19:53

Strange error, try stepping the code with the debugger to check if everything runs as expected, especially that the m_hWnd is not NULL.

The implementation of CZigBeeIf and the actual hardware associated with it are also suspicious. In the first case there is a greater time lag between the creation of the object and the subscribe events (a dialog pop ups and user must click at least one button). Try emulating this delay with a sleep call to see if that is what is causing the problem.

Re: Problem with the window handle m_hWnd

dannyham4-Apr-06 22:21

dannyham

4-Apr-06 22:21

Thanks

A sleep call before Subscribe to the callbacks sorted it out.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.