Re: Hide & Show Menu bar dynamically - C / C++ / MFC Discussion Boards

dSolariuM17-Jan-05 16:04

17-Jan-05 16:04

Hello,
I have a static text over an activex object but after debugging or
releasing the app the gray rectangle around the static text is still
there...
Please help me on this.
Thanks.

RegEnumValue example

jonavon blakly17-Jan-05 15:32

jonavon blakly

17-Jan-05 15:32

I need an example of RegEnumValue.

Re: RegEnumValue example

ThatsAlok17-Jan-05 18:04

ThatsAlok

17-Jan-05 18:04

First Take a look at RegEnumKey
RegEnumKey look Like this

LONG <code>RegEnumValue</code>(
  HKEY hKey,           <font color="green">  // handle to key to query </font>
  DWORD dwIndex,     <font color="green">    // index of value to query </font>
  LPTSTR lpValueName, <font color="green">   // value buffer </font>
  LPDWORD lpcValueName, <font color="green"> // size of value buffer </font>
  LPDWORD lpReserved,  <font color="green">  // reserved </font>
  LPDWORD lpType,      <font color="green">  // type buffer </font>
  LPBYTE lpData,      <font color="green">   // data buffer </font>
  LPDWORD lpcbData    <font color="green">   // size of data buffer </font>
);

Now Some Code Snippet

char szNameOfKey[200];<font color="green">//Buffer  </font>
DWORD dwBufferSize=200;<font color="green">//Buffer Size </font>
DWORD dwIndex=0;
CStringArray arrOfKeys;

Now Enumerate the HKEY_CURRENT_USER using RegEnumKey

 while(RegEnumKey(<code>HKEY_CURRENT_USER</code>, //
                  dwIndex++, <font color="green">//Index of Key to be Retrive </font>
                  szNameOfKey,<font color="green">//Buffer of Key </font>
                  dwBufferSize,<font color="green">//Buffer Size </font>
                  NULL,<font color="green">//as documented in MSDN </font>
                  NULL,<font color="green">//We don't need this right </font>
                  NULL,<font color="green">//So no need of it </font>
                  NULL)!= ERROR_NO_MORE_ITEMS)
 {
 <font color="green">//add New Found Key to array </font>
  arrOfKeys.Add(<code>szNameOfKey</code>);
 <font color="green">//Restucture the size of Buffer as it modified during  </font>
 <font color="green">//Enumeration </font>
  dwBufferSize=200;
 }

<font color="green">//Now <code>arrOfKeys</code> Hold all the Enumerated Key </font>

"I Think this Will Help"
<h5
alok gupta="" <br=""> visit me at http://www.thisisalok.tk

Re: RegEnumValue example

jonavon blakly18-Jan-05 15:06

jonavon blakly

18-Jan-05 15:06

Thank you very very much!

Create thumbnail of first page of PDF

Defenestration17-Jan-05 14:51

Defenestration

17-Jan-05 14:51

Does anyone know how to create a thumbnail image (BMP) of the first page of a PDF document ?

I'm planning on using it in a thumbnail viewer so it needs to be fast.

Hide & Show Menu bar dynamically

mclpun17-Jan-05 14:09

mclpun

17-Jan-05 14:09

Hi All,

I' m writing a Visual C++ MFC dialog-based program. I added a Menu bar uisng Insert->Resource-> Menu, not by writing code. Then, I tried to show and hide the Menu bar of a modal dialog dynamically.

By writing the following code, I succeed to hide the menu bar.

CWnd* pMain = AfxGetMainWnd();
if (pMain != NULL)
{
CMenu* pMenu = pMain->GetMenu();
while(pMenu != NULL && pMenu->GetMenuItemCount() > 0)
{
pMenu->DeleteMenu(0, MF_BYPOSITION);
pMain->DrawMenuBar();
}
}

But how can I show the menu again? Please kindly help me!

Cheers,
hmc

Re: Hide & Show Menu bar dynamically

Serge Krynine17-Jan-05 17:52

Serge Krynine

17-Jan-05 17:52

I think this code illustrates what you need:

void CShowHideMenuDlg::OnShowMenu()
{
// Load and add the new menu
CMenu mMainMenu;
mMainMenu.LoadMenu(IDR_MENU1);
ASSERT(mMainMenu);
SetMenu(&mMainMenu);
}

void CShowHideMenuDlg::OnHideMenu()
{
// Remove and destroy the old menu
SetMenu(NULL);
::DestroyMenu(GetMenu()->GetSafeHmenu());
}

Regards,
Serge Krynine

Re: Hide & Show Menu bar dynamically

mclpun17-Jan-05 19:20

mclpun

17-Jan-05 19:20

Thanks Serge, got it! Smile | :)

Single click on tray icon to minimize and restore main window

Defenestration17-Jan-05 14:08

Defenestration

17-Jan-05 14:08

Also, if the main window is already restored but is obscured by another window, then the window should be moved to the front instead of being minimized.

How to do it ?

Accessing IE IWebbrowser2 object with toolbar

tnguyen44417-Jan-05 12:54

tnguyen444

17-Jan-05 12:54

Hi,
I have a toolbar and I am trying to access the IWebBrowser2 in WM_LBUTTONDOWN, when someone clicks on a control on my toolbar with the following code:

BSTR bstrUrl;

CComPtr<iwebbrowser2> browser;
browser->get_LocationURL(&bstrUrl);

I am getting a debug assertion failed!
p!=0

I know there should be more to the code. Can somebody help?

CListCtrl question

Tom Wright17-Jan-05 11:29

Tom Wright

17-Jan-05 11:29

I'm wanting to store a thread id in one of the colums of my list control. someone suggested that I store it in the LPARAM. Has anyone done this and if so can you give a suggestion as to how to go about this? Also how to retreive the thread id from that colum?

Thanks

Tom Wright
tawright915@yahoo.com

Re: CListCtrl question

David Crow17-Jan-05 13:36

David Crow

17-Jan-05 13:36

How about using CListCtrl::SetItemData()?

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

Re: CListCtrl question

Serge Krynine17-Jan-05 18:38

Serge Krynine

17-Jan-05 18:38

Hope this will help:

void SetThreadId(CListCtrl& rListCtrl, unsigned int const nColumn, unsigned int const nThreadId)
{
CHeaderCtrl* pHeaderCtrl = rListCtrl.GetHeaderCtrl();
ASSERT(NULL != pHeaderCtrl);
HDITEM hdi;
::memset(&hdi, 0, sizeof(HDITEM));
hdi.mask = HDI_LPARAM;
hdi.lParam = nThreadId;
pHeaderCtrl->SetItem(nColumn, &hdi);
}

unsigned int GetThreadId(CListCtrl& rListCtrl, unsigned int const nColumn)
{
HDITEM hdi;
::memset(&hdi, 0, sizeof(HDITEM));
hdi.mask = HDI_LPARAM;
CHeaderCtrl* pHeaderCtrl = rListCtrl.GetHeaderCtrl();
ASSERT(NULL != pHeaderCtrl);
pHeaderCtrl->GetItem(nColumn, &hdi);
return hdi.lParam;
}

Regards,
Serge Krynine

Re: CListCtrl question

Tom Wright18-Jan-05 7:04

Tom Wright

18-Jan-05 7:04

That did it. Thanks.

Tom Wright
tawright915@yahoo.com

Hard disk serial

Fabio Miguez17-Jan-05 9:38

Fabio Miguez

17-Jan-05 9:38

Hey all,

Trying to retrieve the hd serial through VC++ 6.0, not finding a way to do it.

MSDN only had WMI scripting for this, and that's over my head. Is that the only way?

Best Regards

Fabio Miguez

Re: Hard disk serial

David Crow17-Jan-05 10:27

David Crow

17-Jan-05 10:27

Does this help?

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

Re: Hard disk serial

Fabio Miguez17-Jan-05 11:02

Fabio Miguez

17-Jan-05 11:02

Hey David,

Thanks a lot for the link. I am running through the code right now, and a lot of it is foreign to me, but I will see how I can implement this onto my code. I am also having problems compiling, but the .exe available at the site works.

I would like to take advantage of the moment to ask if it has to be this complex, getting a serial number for the HD. Is there no function or simpler code able to do it?

Thanks again!

Best Regards

Fabio Miguez

Re: Hard disk serial

Blake Miller17-Jan-05 11:11

Blake Miller

17-Jan-05 11:11

GetVolumeInformation - See the lpVolumeSerialNumber field in the data structure.
Maybe that is the information you wanted.

Re: Hard disk serial

Fabio Miguez17-Jan-05 12:17

Fabio Miguez

17-Jan-05 12:17

Hey Blake,

Great, it seems I am getting somewhere now. I have implemented it in my test dialog, and lpVolumeNameBuffer and lpFileSystemNameBuffer are correct (the drive name and NTFS were returned properly). The serial number looks good, a 7 digit integer, but when I compare to the serial given by diskid32.exe, the program suggested above, they do not match. The serial on diskid32.exe has a mix of alphanumeric characters. The one I am obtaining using GetVolumeInformation can only be an integer, since the parameter used to store it is a DWORD, and I am formatting it as such:

m_sResults.Format("%d", &SerialNumber);

Any ideas where I could check the actual disk serial, short of looking on the HD casing? I use a laptop, so that would be a little harder than on a desktop.

Thanks again, great help!

Best Regards

Fabio Miguez

Re: Hard disk serial

David Crow17-Jan-05 13:31

David Crow

17-Jan-05 13:31

Fabio Miguez wrote:
m_sResults.Format("%d", &SerialNumber);

Do you mean to take the address of, rather than the value of, SerialNumber?

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

Re: Hard disk serial

Fabio Miguez17-Jan-05 16:08

Fabio Miguez

17-Jan-05 16:08

Hey Dave,

Damn it, you are right, I screwed that one up. But, on removing the & to get the value, not the address, I get a negative number. Perhaps this is happening due to the integer Format I perform? How could I place this value onto m_sResult (a CString) with alphanumeric characters?

Thanks again.

Best Regards

Fabio Miguez

Re: Hard disk serial

Ryan Binns17-Jan-05 19:46

Ryan Binns

17-Jan-05 19:46

Fabio Miguez wrote:
But, on removing the & to get the value, not the address, I get a negative number.

HDD serial numbers/volume IDs are unsigned, and are usually given as hex, so use %x rather than %d (or %u if you want a decimal number).

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Re: Hard disk serial

thompsons17-Jan-05 17:53

thompsons

17-Jan-05 17:53

Fabio,
I also needed the information you seek. I downloaded the DiskId32
and also had compile problems; (4) errors. Were you able to get around the compile errors?
The *.exe runs fine, but won't recompile under VC++ 6.0...
Would appreciate any suggestions you may have.

Thanks,

Steve.

Re: Hard disk serial

Fabio Miguez18-Jan-05 1:27

Fabio Miguez

18-Jan-05 1:27

Hey Steve and Ryan,

It seems GetVolumeInformation doesn't return the HDD serial, but the "volume" serial, which changes every time you format the HDD (or is the same for cloned HDDs, which a bunch of manufacturers do).

Apparently there is no easy way to get HDD serials, short of the complex (to me) code in diskid32. I also found that my number is negative because under Windows, when formatting a drive, the volume serial can be either positive or negative. So you could use this number for copy protection, but if the user passes it on to someone who happens to have the same model of computer (say, the same Dell), this volume serial might be the same. What are the chances? Not great, but this is definitely not the way to go for large scale applications.

Microsoft activation, for example, uses the actual HDD serial, among others, probably with code similar to diskid32.

My question now is are there any other hardware serials (video card, mobo, memory) that are more easily accessible to begginers like me?

Best Regards

Fabio Miguez

Re: Hard disk serial

Blake Miller18-Jan-05 5:07

Blake Miller

18-Jan-05 5:07

Fabio,
Are you trying to lock to a specific computer?

In that case, use multiple hardware keys and multiple system metrics and allow the program to work if a 'majority' of them are met.

Use hard drive volume numbers, get the MAC address of the network card if there is a network card, use a hash of monitor type name, you could look up modem manufacturer or modem type, memory quantity, sound card manufacturer or type, etc.

You save all these bits of information somewhere, and when you do your check, you allow it to be successful if several of the items are still valid (for example, user might have temporarily used a different monitor, but it is unlikely they constantly add or remove memory or change hard drives around).

This way, you are not dependnet upon one single bit of information that might change, and as a result, constantly issuing new keys to your users unecessarily.

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