C / C++ / MFC Discussion Boards

Mark Salsbery12-Sep-07 8:30

12-Sep-07 8:30

A couple thoughts...

Inline getters and setters should work just as fast as direct access.

An advantage of getters and setters is you can change the implementation without
having to change code anywhere else. For example, if in the future you need to calculate
the "speed" member on the fly, all you'd have to do is implement that functionality in the getter
method. All code that uses it stays the same.

Cheers,
Mark

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

EnumProcesses

dellthinker11-Sep-07 15:54

dellthinker

11-Sep-07 15:54

Hi all, quick question. I've read the MSDN library definition for this API and all i really want to know is can i use it to find a running program or not. Still searhing for a example of this API in use so its still very un-clear to me. Thanx in advance!

Re: EnumProcesses

Hamid_RT11-Sep-07 19:39

Hamid_RT

11-Sep-07 19:39

EnumProcesses shows each process on the system but what do you need exactly?

Re: EnumProcesses

Randor 11-Sep-07 20:39

Randor

11-Sep-07 20:39

DWORD dwPID[16860]; //maximim amount of PIDS possible
DWORD dwRet;
DWORD dwNumProcesses;

if (TRUE == EnumProcesses(dwPID,sizeof(dwPID),&dwRet))
{
	dwNumProcesses = dwRet / (sizeof(DWORD);

	for(int i =0;i < dwNumProcesses;++i)
	{
		printf(_T("Process ID = %d"),dwPID[i];
	}
}

Best Wishes,
-Randor (David Delaune)

Re: EnumProcesses

Randor 11-Sep-07 20:53

Randor

11-Sep-07 20:53

This function can check if a process is running by checking the executable name. You may want to add additional checking such as window class enumeration or enumeration of known loaded modules.

BOOL IsExecutableRunning(TCHAR *lpszExe)
{
	HANDLE hSnapShot=CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0);
	PROCESSENTRY32 processInfo;
	processInfo.dwSize=sizeof(PROCESSENTRY32);
	
	while(Process32Next(hSnapShot,&processInfo)!=FALSE)
	{
		if(processInfo.th32ProcessID > 12 && _tclen(processInfo.szExeFile) > 0)
		{
			if(_tcscmp(processInfo.szExeFile,lpszExe) == 0)
			{
				CloseHandle(hSnapShot);
				return TRUE;
			}
		}
	}
	CloseHandle(hSnapShot);
	return FALSE;
}

Best Wishes,
-Randor (David Delaune)

MS OFFICE File Open Save Dialog Hooking

JuggernautMsn11-Sep-07 14:00

JuggernautMsn

11-Sep-07 14:00

I am trying to get and set the following information from File/Open save dialog of Microsoft Office 2000/2003/2007

1.Retrieve the currently displayed/selected folder path and also the file name that is selected if any.

2. Retrieve the selected file path, when the user clicks the open or save button.

3.Set a pre-defined string path within the file-name combo box.

I have been able to do the above task in case of File Open/Save common controls dialog(used by WordPad ,Notepad,
Acrobat Reader etc.) by using the dialog functions depicted in MSDN. But it is not working with Microsoft Office Dialog and I have found no MSDN documentation that depicts the internal messages of Microsoft Office Dialogs.

Please help me if you can.

Thanks and regards,

Re: MS OFFICE File Open Save Dialog Hooking

Mark Salsbery11-Sep-07 15:14

Mark Salsbery

11-Sep-07 15:14

Microsoft Office doesn't use the common dialog for file open/save AFAIK.

The Office dialogs may well be undocumented. From our point of view, the
MS Office suite of applications are proprietary 3rd-party applications, not part of the
operating system, so there's no reason the dialogs and their functionality should be
documented.

You may get a reply here from someone with the info you need.
In the meantime, here's a couple links you may or may not have been to already:

Office Developer Center[^]
MSDN Newsgroups: Office Solutions Development[^]

That's all the info I have Smile | :)

Good luck!
Mark

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

Re: MS OFFICE File Open Save Dialog Hooking

JuggernautMsn11-Sep-07 15:19

JuggernautMsn

11-Sep-07 15:19

Sir,

Thank you for your effort to help me out.

I will check those links mentioned by you.

Thanks for this and the welcome message at the lounge.

Regards,

What's the diff between DLLs ?

USAFHokie8011-Sep-07 10:16

USAFHokie80

11-Sep-07 10:16

What's the difference between an "MFC extension DLL" and a "regular DLL with MFC dynamically linked" ?

What are the uses for each type?

I asked this question on codeguru and was met with an extraordinarily arrogant non-answer. If that's what you plan on posting, please keep it to yourself.

Thanks,
Sam.

Re: What's the diff between DLLs ?

C^hris L^osinger11-Sep-07 10:38

C^hris L^osinger

11-Sep-07 10:38

an MFC Ext DLL is one that exports C++ classes using MFC as a base. a regular DLL exports C-style functions.

or, as MS puts it...

image processing toolkits | batch image processing

Re: What's the diff between DLLs ?

USAFHokie8011-Sep-07 10:59

USAFHokie80

11-Sep-07 10:59

so then the "regular dll that uses MFC" can't contain classes? for instance, if i wanted to put a dialog and associated functions in a dll, i would use the extension dll whereas if i were only creating functions that say, operated on a CString, i could do that in a "regular dll that uses MFC" ?

Re: What's the diff between DLLs ?

C^hris L^osinger11-Sep-07 11:17

C^hris L^osinger

11-Sep-07 11:17

USAFHokie80 wrote:
so then the "regular dll that uses MFC" can't contain classes?

it can contain them, sure. you can even export them: (for example).

but if you want to export C++ classes, you'll really should use an MFC extension DLL. most importantly, this ensures that the app and the DLL are using the same heap for memory allocation - don't want to pass a CString which has allocated memory into a DLL which is looking at a different heap...

or, as MS puts it: "If you need to pass an MFC or MFC-derived object pointer to or from an MFC DLL, the DLL should be an extension DLL."

image processing toolkits | batch image processing

Re: What's the diff between DLLs ?

USAFHokie8011-Sep-07 11:29

USAFHokie80

11-Sep-07 11:29

Ah. That makes more sense. I don't use DLLs really, so that's probably the problem here. Just trying to figure out the difference so that I can start using them correctly. Smile | :)

Re: What's the diff between DLLs ?

Mark Salsbery11-Sep-07 11:50

Mark Salsbery

11-Sep-07 11:50

Here's another link (very close to Chris' first link)...

Kinds of DLLs[^]

Mark

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

Re: What's the diff between DLLs ?

led mike11-Sep-07 11:49

led mike

11-Sep-07 11:49

Chris Losinger wrote:
but if you want to export C++ classes, you'll really should use an MFC extension DLL.

If the DLL uses MFC otherwise a simple DLL will suffice.

Add drop shadow to a child dialog

dSolariuM11-Sep-07 6:09

dSolariuM

11-Sep-07 6:09

Hi,
I want to add drop shadow to a child window...
please help me.
thank you.

Every new thing you learn,Gives you a new personality.

Re: Add drop shadow to a child dialog

Stephen Hewitt11-Sep-07 14:30

Stephen Hewitt

11-Sep-07 14:30

I will assume you're using MFC:

BOOL CShadowDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	::SetClassLong(
		GetSafeHwnd(),
		GCL_STYLE,
		::GetClassLong(GetSafeHwnd(), GCL_STYLE) | CS_DROPSHADOW/*0x00020000*/
		);
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

Note that CS_DROPSHADOW requires a Windows version >= XP.
Note that after this code is run ALL dialogs will have shadows!

Steve

Re: Add drop shadow to a child dialog

nitin311-Sep-07 21:10

nitin3

11-Sep-07 21:10

Is it possible to set drop shadow for controls ?

Re: Add drop shadow to a child dialog

Stephen Hewitt11-Sep-07 21:18

Stephen Hewitt

11-Sep-07 21:18

I don't think so. You could always implement this functionality yourself however.

Steve

Re: Add drop shadow to a child dialog

balaji16719-Feb-14 19:26

balaji167

19-Feb-14 19:26

I used this in my dialog, After that try to hide the dialog, Dialog is hiding but the shadow is not hiding. I am using ShowWindow(SW_HIDE).

How to change the screen orientation (mirror effect)?

iasouza11-Sep-07 4:18

iasouza

11-Sep-07 4:18

Hi,
I'm implementing an simulator and the user interacts with an image reflected in a mirror. How can I do this reflection, how can I flip or change this 3d world?
I'm using C++ language with Opengl and OpenHaptics (Phantom Omni library).
Regards,

Re: How to change the screen orientation (mirror effect)?

Waldermort11-Sep-07 21:39

Waldermort

11-Sep-07 21:39

You would be better off reading the docs for OpenGL since your question is more related to interacting with the OpenGL graphic drivers than C or C++.

Waldermort

debugging a dll on command line

Orkun GEDiK11-Sep-07 4:10

Orkun GEDiK

11-Sep-07 4:10

Hi,

I am trying to debug a dll project on VC++ 6.0. Dll file is loading dynamically in the executable (Win32 Console Application) by LoadLibrary API and calling functions by using function pointers. How can I debug this DLL file?

Thank you.

Orkun GEDiK
Senior SAP R/3 Basis and Development Consultant
ASTRON

Re: debugging a dll on command line

Cedric Moonen11-Sep-07 5:00

Cedric Moonen

11-Sep-07 5:00

You can specify a executable to be stared when you want to debug your dll. I don't remember exactly where it was for VC6 but it was somewhere in the project properties.

Cédric Moonen
Software developer

Charting control [v1.2]

Re: debugging a dll on command line

Orkun GEDiK11-Sep-07 5:40

Orkun GEDiK

11-Sep-07 5:40

Hi Cédric,

I tried that method before, but didn't work. This is because, as I emphasised in the message, "DLL is loading by LoadLibrary API" in executable. Is there any other suggestion?

Thank you.

Orkun GEDiK
Senior SAP R/3 Basis and Development Consultant
ASTRON

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