Re: Hot Key Problem. - C / C++ / MFC Discussion Boards

Re: how to write new line character in a text file?

Nishad S22-Sep-07 0:11

Nishad S

22-Sep-07 0:11

Does it have any difference from the actual code?

- NS -

Re: how to write new line character in a text file?

Hamid_RT22-Sep-07 0:15

Hamid_RT

22-Sep-07 0:15

I checked this line it works.

Re: how to write new line character in a text file?

Nishad S22-Sep-07 0:36

Nishad S

22-Sep-07 0:36

But what is the magic between

oFile.Write(_T("code project\n"),sizeof(_T("code project\n")));

and

oFile.Write("code project",sizeof("code project"));
oFile.Write("\n",1);

Unsure | :~

- NS -

Re: how to write new line character in a text file?

Hamid_RT22-Sep-07 1:55

Hamid_RT

22-Sep-07 1:55

Well can you check it and then tell me what did you see?;)

Re: how to write new line character in a text file?

David Crow23-Sep-07 10:16

David Crow

23-Sep-07 10:16

Use:

oFile.Write("code project", strlen("code project"));

CStdioFile oFile;
...
oFile.WriteString("code project\n");

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Hot Key Problem.

GauranG Shah21-Sep-07 21:11

GauranG Shah

21-Sep-07 21:11

am using Hot key in one of my appliation.But there is a problem.
The Hot key combination works only when the focus is on that window Sniff | :^)

. while my application is runing in the background( Its a Win32 dialog based application and i make dialog hidden at startup)and so the Hot key is not working. Is there any way I can solve this. Confused | :confused:

I am using something like this now,

LRESULT CALLBACK MyDialogProc(HWND hWndDlg,....)
{
 ShowWindow(hWndDlg,SW_HIDE);
  switch(message)
	 {
          case  WM_INITDIALOG:
		 { 
	           InitCommonControls(); 
		   HWND hHotKey = GetDlgItem(hWndDlg,IDC_HOTKEY1);
		   if(!RegisterHotKey(hWndDlg , IDC_HOTKEY1, MOD_ALT | MOD_CONTROL,0x67))
           		 {
				dError = GetLastError();
				MessageBox(NULL,L"Hot Key Not Working ",L"Error",0);
			 }
					
						
	          }
		break;
	 case WM_HOTKEY:
	             ChangeString(hWndDlg);
	             break;
      }
}

Thnx in advance.....

Screen Capture

Re: Hot Key Problem.

nbugalia22-Sep-07 7:10

nbugalia

22-Sep-07 7:10

GauranG33 wrote:
HWND hHotKey = GetDlgItem(hWndDlg,IDC_HOTKEY1);

if(!RegisterHotKey(hWndDlg , IDC_HOTKEY1, MOD_ALT | MOD_CONTROL,0x67))

From MSDN:
BOOL RegisterHotKey( HWND hWnd, int id, UINT fsModifiers, UINT vk);

id
[in] Specifies the identifier of the hot key.

but from your code, it seems the ID of a control window.
And where are you using hHotKey ?

Re: Hot Key Problem.

GauranG Shah23-Sep-07 20:09

GauranG Shah

23-Sep-07 20:09

Yes, IDC_HOTKEY1 is the cotrol ID of the Hotkey control which I have dragged from the ToolBox on my dialog box.

I am using Win32 Dialog Based Application. In that I have put the Hotkey Control and then I am using the previous code. The problem is that hotkey is working only when the focus is on dialog box. If the Focus is on other window.Hot Key combinations are not working.

I want to call some function when the combination of some key are pressed.And so I am using HotKey for that.

Screen Capture

HBITMAP

nitin321-Sep-07 20:34

nitin3

21-Sep-07 20:34

how to retreive the height an dwidth of an HBITMAP ? Confused | :confused:

void GetBitmapResolution( HBITMAP hBmpIn , int *BmpCx , int *BmpCy )
{
// plz tell me hwo to solve this function
}

thanks & regards

Re: HBITMAP

John R. Shaw21-Sep-07 20:55

John R. Shaw

21-Sep-07 20:55

I almost looked this up for you, but I could not bring myself to do it. Any Windows help system will provide the answer, and several articles at CP.

Shortcut: look up my name and examine the code, I am sure the solution is in there some where.

Sorry, in a bad mood tonight.

INTP
"Program testing can be used to show the presence of bugs, but never to show their absence."Edsger Dijkstra

Re: HBITMAP

Hamid_RT21-Sep-07 23:39

Hamid_RT

21-Sep-07 23:39

Did you see BITMAP structure and see GetObject.

Re: HBITMAP

Nishad S21-Sep-07 23:39

Nishad S

21-Sep-07 23:39

Use GetObject

- NS -

i want to add installation wizard dialog box in mfc application.

Dhiraj kumar Saini21-Sep-07 19:28

Dhiraj kumar Saini

21-Sep-07 19:28

I am making an mfc dialog based application where when I click on a button should open a installation type dialogs with NEXT PREVIOUS and CANCEL BUTTON.

How to do it on mfc.

Please help me.

Dhiraj Kumar Saini

Re: i want to add installation wizard dialog box in mfc application.

prasad_som21-Sep-07 19:39

prasad_som

21-Sep-07 19:39

Have a look at PropertySheet section on this site. You will get tons of articles.

Prasad
MS MVP - VC++

Re: i want to add installation wizard dialog box in mfc application.

Hamid_RT21-Sep-07 23:42

Hamid_RT

21-Sep-07 23:42

See PropertySheet Shell Extension AppWizard [^]

What such code mean?

kcynic21-Sep-07 19:04

kcynic

21-Sep-07 19:04

I saw a code chunk like this:

// MP3FRAMEHEADER structure
struct MP3FRAMEHEADER
{
unsigned emphasis : 2; // M
unsigned original : 1; // L
unsigned copyright : 1; // K
unsigned modeext : 2; // J
unsigned chanmode : 2; // I
unsigned privbit : 1; // H
unsigned padding : 1; // G
unsigned samplerate : 2; // F
unsigned bitrate : 4; // E
unsigned hascrc : 1; // D
unsigned mpeglayer : 2; // C
unsigned mpegver : 2; // B
unsigned framesync : 11; // A
};

There,the number like 2,1,1,... means what?
It does not look like the initialized number of its front member?
Who would like to tell why the writer coding like above?
Thanks.

GOOD LUCK!

Re: What such code mean?

nitin321-Sep-07 19:25

nitin3

21-Sep-07 19:25

http://msdn2.microsoft.com/en-us/library/ewwyfdbe(VS.80).aspx[^]

Re: What such code mean?

prasad_som21-Sep-07 19:41

prasad_som

21-Sep-07 19:41

It is called as bit-fields. Have a look at link provided by Nitin.

Prasad
MS MVP - VC++

Re: What such code mean?

kcynic21-Sep-07 21:35

kcynic

21-Sep-07 21:35

Oh,I see.
Thank you very much.

Re: What such code mean?

kcynic21-Sep-07 22:03

kcynic

21-Sep-07 22:03

I know it now.
Thank you very much.

BEST WISHES.

Re: What such code mean?

John R. Shaw21-Sep-07 21:08

John R. Shaw

21-Sep-07 21:08

All the values following “:” are just instructions to the compiler. They tell it to pack the variable into that number of bits. What that means, in the code you presented, is that the entire structure is stored in 32 bits, because it only requires 31 bits (it will be slower, but take up less memory).

Well that is enough for you to figure it out. Apparently the writer did not expect more than two versions of the code, because he only allowed one bit for that.

INTP
"Program testing can be used to show the presence of bugs, but never to show their absence."Edsger Dijkstra

Getting the process that owns the window

Tydia-kun21-Sep-07 10:24

Tydia-kun

21-Sep-07 10:24

Hi,

I've been trying to figure out how to get the owner process or a window.
Basically, I want to use GetForegroundWindow() to identify the current window that has focus and then be able to, from this, get the process that owns the window. It should be possible as it's the very same thing Task Manager does.
If anyone knows how to do it, I'd be grateful.

Thanks.

Re: Getting the process that owns the window

Mark Salsbery21-Sep-07 11:08

Mark Salsbery

21-Sep-07 11:08

The GetWindowThreadProcessId() API can help.

This came up recently here and I can't remember how to get the name from the process ID.

I think you need to enumerate the processes on the system and find the one that matches the ID.

A couple ways to enumerate processes:
CreateToolhelp32Snapshot()/Process32First()/Process32Next()
Use WMI and the Win32_Process class

Tydia-kun wrote:
It should be possible as it's the very same thing Task Manager does.

I'm not sure why task manager would use window handles to find processes when there's many
methods available for enumerating processes and task manager also shows processes that don't
have any windows. I'd guess that task manager uses WMI.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: Getting the process that owns the window

led mike21-Sep-07 11:22

led mike

21-Sep-07 11:22

Mark Salsbery wrote:
I'd guess that task manager uses WMI.

Nah... probably DDE... so a couple tin cans and some string. But you can't find the documentation online because it was chiseled into stone tablets.

Re: Getting the process that owns the window

Mark Salsbery21-Sep-07 11:45

Mark Salsbery

21-Sep-07 11:45

I had to sign a NDA for Microsoft so I'm not allowed to talk about The Stone Tablets.

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

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