C / C++ / MFC

28-Sep-11 12:35

Back to my MimeMap Question, but with more focus on the issue

If I get the value of the key that doesn't exist, comm return an empty array in the format I need, (I think so) which is empty. Maybe I can create a new safearray in the exact format, or just add my values to the existing array.

What do you think?

mimeMap | safearray of VARIANT = [0]()

VARIANT mimeMap;
    VariantInit(&mimeMap);
    hr = pADs->GetEx(CComBSTR("MimeMap"), &mimeMap);

TheGreatAndPowerfulOz29-Sep-11 4:26

29-Sep-11 4:26

I could find your MimeMap question. But even so, I can't make heads or tails of what you're saying...

What are you on about???? Confused | :confused:

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jkirkerx29-Sep-11 5:22

29-Sep-11 5:22

I was brain dead when I posted the question, I read again and it didn't make sense to me either.

I'm frustrated with the mimemap and ADS. I get the error -2147463156. I decoded the error to my input data not being in the correct format of a safe array.When I examine &var in PutEx, it looks like a safe array to me, but putEx just rejects it. I've googled the subject, but it looks so complex, in which articles talk about a pointer in the package, that points to a record in the safe array, BSTR's, VT's. I found 1 vb example of a successful add to MimeMap, if I could just package my data correctly, I could add the data to the key. Just looking for help again.

LPWSTR pszMimes[] = 
	{
		L".application, application/x-ms-application",
		L".deploy, application/octet-stream",
		L".flv, video/x-flv",
		L".manifest, application/-x-ms-manifest",
		L".msp, application/octet-stream",
		L".msu, application/octet-stream",
	};

    DWORD dwNumber = sizeof(pszMimes)/sizeof(LPWSTR);
    hr = ADsBuildVarArrayStr(pszMimes, dwNumber, &var);
    
	if ( SUCCEEDED (hr )) {
		hr = pADs->PutEx(ADS_PROPERTY_UPDATE, CComBSTR("MimeMap"), CComVariant(var) ); 
		VariantClear(&var);
		if ( SUCCEEDED (hr )) {
			hr = pADs->SetInfo(); 
		}
	}

TheGreatAndPowerfulOz29-Sep-11 6:47

29-Sep-11 6:47

Well -2147463156 == 0x8000500C == E_ADS_CANT_CONVERT_DATATYPE (Generic ADSI Error Codes[^])

So there's something in the var that can't be converted.

Have you tried calling VariantInit(&var) before calling ADsBuildVarArrayStr[^]?

IADs::PutEx[^]

jkirkerx29-Sep-11 8:18

COM dll that uses Windows7 libraries on XP

29-Sep-11 8:18

Yes Sir.

I'm convinced that I have a safe array. it works on many other keys just fine. It's just the MimeMap Key, I really need to figure out how to decode the HRESULT numbers.
-2147463160, -2147463156

I give up. Going to put this on my ELance list and farm it out next week.

Thanks for the help, I got most of it written myself.

Al_Pennyworth28-Sep-11 9:05

Al_Pennyworth

28-Sep-11 9:05

I am at a loss and I am hoping someone can lead me down the right path. I have a COM dll that is written in C++. If a user is on Windows7 (or higher), the user will have the option of invoking this new functionality. Otherwise, it will not be available. The problem is that this new functionality uses specific libraries that are only available with Windows7. I didn't think it was a problem until I went to register the DLL on a XP box, where the registration fails. I am certain it is because of these libraries (which are in the project settings). Is there any way to make the DLLS conditional? I have been looking for some different methods but I haven't located anything.

TheGreatAndPowerfulOz28-Sep-11 9:10

28-Sep-11 9:10

You can try using the "delay load" functionality of the linker for the dependent Win7 DLLs.

If that doesn't work, you will need to LoadLibrary()[^] them, and use GetProcAddress()[^]

Al_Pennyworth28-Sep-11 9:23

Al_Pennyworth

28-Sep-11 9:23

Ah, loadlibrary, it never even occurred to me. I have used it for DLLs but I have never tried it for libraries. I will give that a try.

TheGreatAndPowerfulOz28-Sep-11 9:27

28-Sep-11 9:27

If these are static libraries (.LIBs) you're linking to that refer to win7 dlls, then you'll need to put the code that refers to those static libraries into a DLL and then LoadLibrary() those.

Also you could detect the OS, and only LoadLibrary() when on Win7 or greater.

Todays Question, ShellExecute using - start /w pkgmgr.exe /iu:

Randor 28-Sep-11 19:50

Randor

28-Sep-11 19:50

Hi,

When you compile your COM library you need to #define the appropriate WINVER, _WIN32_WINNT and _WIN32_IE. By setting these values the windows headers will #include or exclude specific functions/libraries. You may receive some compilation errors after setting these values. Do not panic... you will need to use LoadLibrary/GetProcAddress at runtime to determine if the functions are available. Some Win7 features may not be available on WinXP so you may need to re-implement some portions of your application for backwards compatibility.

Using the Windows Headers[^]

Best Wishes,
-David Delaune

jkirkerx28-Sep-11 7:20

Re: Todays Question, ShellExecute using - start /w pkgmgr.exe /iu:

28-Sep-11 7:20

I'm using ShellExecuteEX just to get started with my project, and I'm sure there will be offers of a better way to complete the task. My post yesterday was to build the parameter string for ShellExecuteEX, in which I run the Pkgmgr.exe program

There are 2 ways to run the program
1. pkgmgr.exe /iu:myparameters - starts program, but quickly releases shell once program starts.

2. Start /w pkgmgr.exe /iu:myparamters - starts program, does not release shell until it's complete.

I want the second method, so my program waits until the shell completes, but ShellExecuteEx actually checks for the existence of the program file as a pre-flight check.

I was also wondering if there is a way to attach a window of something to so progress.

//Build the Shell Parameters
	lp_Operation = "open";
	lp_File = "pkgmgr.exe";
	lp_Directory = msi_DIR_AppVolumeFolder_II;

	//Build the PkgMgr.Exe Parameters for a clean installation of IIS
	lp_Parameters = caWin._create_IIS_Pkgmgr_Install_Parameters();	

	//Execute the Program in the shell
	SHELLEXECUTEINFO lpExecInfo;
	lpExecInfo.cbSize  = sizeof(SHELLEXECUTEINFO);
	lpExecInfo.lpFile = lp_File; 
	lpExecInfo.fMask = SEE_MASK_DOENVSUBST|SEE_MASK_NOCLOSEPROCESS ;     
	lpExecInfo.hwnd = NULL;  
	lpExecInfo.lpVerb = lp_Operation; 
	lpExecInfo.lpParameters = lp_Parameters; 
	lpExecInfo.lpDirectory = lp_Directory;   
	lpExecInfo.nShow = SW_SHOW ;  
	lpExecInfo.hInstApp = (HINSTANCE) SE_ERR_DDEFAIL ;   
	exit_Code = ShellExecuteEx(&lpExecInfo);
         
	//wait until a file is finished printing
	if(lpExecInfo.hProcess !=NULL) {
		::WaitForSingleObject(lpExecInfo.hProcess, INFINITE);
		::CloseHandle(lpExecInfo.hProcess);
	}

TheGreatAndPowerfulOz28-Sep-11 7:32

Re: Todays Question, ShellExecute using - start /w pkgmgr.exe /iu:

28-Sep-11 7:32

To get a "progress window", you could run the pkgmgr.exe from the command line:

CMD [/A | /U] [/Q] [/D] [/E:ON | /E:OFF] [/F:ON | /F:OFF] [/V:ON | /V:OFF]
    [[/S] [/C | /K] string]

/C      Carries out the command specified by string and then terminates
/K      Carries out the command specified by string but remains
/S      Modifies the treatment of string after /C or /K (see below)
/Q      Turns echo off
/D      Disable execution of AutoRun commands from registry (see below)
/A      Causes the output of internal commands to a pipe or file to be ANSI
/U      Causes the output of internal commands to a pipe or file to be
        Unicode
/T:fg   Sets the foreground/background colors (see COLOR /? for more info)
/E:ON   Enable command extensions (see below)
/E:OFF  Disable command extensions (see below)
/F:ON   Enable file and directory name completion characters (see below)
/F:OFF  Disable file and directory name completion characters (see below)
/V:ON   Enable delayed environment variable expansion using ! as the
        delimiter. For example, /V:ON would allow !var! to expand the
        variable var at execution time.  The var syntax expands variables
        at input time, which is quite a different thing when inside of a FOR
        loop.
/V:OFF  Disable delayed environment expansion.

So, do the following:

lp_File = "cmd.exe"
lp_Parameters = CString("/k pkgmgr.exe ") + lp_Parameters;

This will start a command prompt and then run the pkgmgr.exe program.

To get the full help on cmd, start a command prompt (this *is* cmd.exe) and type cmd /?

jkirkerx28-Sep-11 8:03

Re: Todays Question, ShellExecute using - start /w pkgmgr.exe /iu:

28-Sep-11 8:03

Good idea, didn't think of that.

What about the Start /w pkgmgr.exe to satisfy the pkgmgr?

or /k Start /w pkgmgr.exe /iu:

Let me try them all out first and see what happens

Thanks, be back in an hour

jkirkerx28-Sep-11 9:49

Re: Todays Question, ShellExecute using - start /w pkgmgr.exe /iu:

28-Sep-11 9:49

I didn't like the cmd window hanging there with a blinking cursor, Although it did the job.

I added the CoIntialize to the Shell Execute, and it grabs the process, and doesn't let go until the pkgmgr.exe completes now. Before it just came back after the program started running. Now I just need to add the exitCode stuff in case it fails for some reason, and check the errorlevel code at the end.

I'm going to leave it at this for now.

//Execute the Program in the shell
	SHELLEXECUTEINFO lpExecInfo = {0};
	lpExecInfo.cbSize  = sizeof(SHELLEXECUTEINFO);
	lpExecInfo.lpFile = lp_File; 
	lpExecInfo.fMask = SEE_MASK_DOENVSUBST|SEE_MASK_NOCLOSEPROCESS ;     
	lpExecInfo.hwnd = NULL;  
	lpExecInfo.lpVerb = lp_Operation; 
	lpExecInfo.lpParameters = lp_Parameters; 
	lpExecInfo.lpDirectory = lp_Directory;   
	lpExecInfo.nShow = SW_SHOW ;  
	lpExecInfo.hInstApp = (HINSTANCE) SE_ERR_DDEFAIL ;

	//Instialize the Comm Pointer first
	hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE);
	if ( FAILED( hr ) ) {		
		CoUninitialize();
		hr = CoInitializeEx( NULL, COINIT_MULTITHREADED );		
		if ( FAILED( hr ) )	{
			wprintf( L"CoInitialize failed. Error 0x%0x\n", hr );
			goto comError;
		}
	}

	exit_Code = ShellExecuteEx(&lpExecInfo);
         
	//wait until a shell command is finished
	if(lpExecInfo.hProcess !=NULL) {
		::WaitForSingleObject(lpExecInfo.hProcess, INFINITE);
		::CloseHandle(lpExecInfo.hProcess);
	}

	comError:
	CoUninitialize();

TheGreatAndPowerfulOz28-Sep-11 11:02

call to 'another program from C code

28-Sep-11 11:02

you can use cmd /c instead of cmd /k and then the command window will disappear once pkgmgr.exe completes.

salv0328-Sep-11 4:46

salv03

28-Sep-11 4:46

I have a C program and here I invoke the Weka software how can I do? I thank you all for your help!

Madhu Nair28-Sep-11 5:36

Madhu Nair

28-Sep-11 5:36

The WINDOWS API replacement of system[^] are ShellExecute[^] / ShellExecuteEx[^] or CreateProcess[^]

salv0328-Sep-11 5:52

salv03

28-Sep-11 5:52

what I want to do and a C program to invoke the software Weka. I can do this if you like? eg with the previous answer but I would like to understand how to go about my problem! thanks to all

David Crow28-Sep-11 7:06

David Crow

28-Sep-11 7:06

Did you bother to follow the links provided by Madhu? They clearly demonstrate how to solve your problem.

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