Re: getting file property, help help help - C / C++ / MFC Discussion Boards

RChin1-Jul-03 23:15

1-Jul-03 23:15

Olinn

Have a look at the msdn article Visual C++/MFC Frequently Asked Questions, in the MSDN library. I haven't got the web link, but the extract is shown below:

How do I change the background color of a button?
Note: the method in "How do I change the background color of a control?" will not work for buttons!

If you want to change the color of a dialog button, you have to use an owner-draw button. (You can use bitmap buttons.) Changing the color through OnCtlColor() will not work for buttons. The following Knowledge Base articles may be of help to you: Q32685, "Using the WM_CTLCOLOR Message," and Q64328, "SAMPLE: Owner-Draw: 3-D Push Button Made from Bitmaps with Text." This article explains sample code for a owner-draw button.

Ramesh (NetQuest), MSMFC, 8/3/95

"..Even my comments have bugs!"

Inspired by Toni78

Is it .Net or Vc++ 6.0?

Anonymous1-Jul-03 6:52

Anonymous

1-Jul-03 6:52

1. CAtlMfcModule -
2. afxstr.h -
3. Atlsecurity.h -

Can somebody tell me if these header files and the class are supported in vc++6.0? I guess it should be .Net..

Re: Is it .Net or Vc++ 6.0?

basementman1-Jul-03 7:42

basementman

1-Jul-03 7:42

I don't see those files in my VC6 install... so, probably VC7.

onwards and upwards...

Retrieving file name and path from Office applications

Member 3600821-Jul-03 6:09

Member 360082

1-Jul-03 6:09

In an add-in I made for office applications I was able to determine whether I'm working with WORD, EXCEL or POWERPOINT by using the GetIDsOfNames function on the application, while rgszNames = "Name".

STDMETHOD ( GetIDsOfNames )(
REFIID riid,
LPOLESTR* rgszNames,
UINT cNames,
LCID lcid,
DISPID* rgdispid );

While working with WORD I was able to retrieve the file name and path by further use of this function:
The active document was retrieved by using the function
on the application, while while
rgszNames = "ActiveDocument".

The document name was retrieved by using the function
on the active document, while while rgszNames = "Name".

The document's file path was retrieved by using the
function on the active document, while while
rgszNames = "Path".

While working with EXCEL I was able to retrieve only the WorkBooks by using the function on the application, while while rgszNames = "WorkBooks".

All this was done in the trial and error system.

I'd appreciate it very much if someone could refer me to a list of values that can be sent as the rgszNames parameter and/or explain how to retrieve the file path and name while working with EXCEL and POWERPOINT.

thanx Rose | [Rose]

getting file property, help help help

pnpfriend1-Jul-03 5:51

pnpfriend

1-Jul-03 5:51

Please help me to get the property of non- MS office files.

getting file property

thanks

Re: getting file property, help help help

David Crow1-Jul-03 6:05

David Crow

1-Jul-03 6:05

Which property? Name, size, date, owner, attribute, etc?

Re: getting file property, help help help

Peter Weyzen1-Jul-03 9:43

Peter Weyzen

1-Jul-03 9:43

my question too -- exactly which properties. Properties about the file?

Or, do you speak of specific properties stored in an OLE DOCFILE(IStorage/IStream)?

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br />
Peter Weyzen<br />
Staff Engineer<br />
<A HREF="http://www.santacruznetworks.com">Santa Cruz Networks</A>

Re: getting file property, help help help

pnpfriend1-Jul-03 10:52

pnpfriend

1-Jul-03 10:52

Thank you for your reply.. I need to know the application name of the file which doesn't have an extension.

I have the following code and it only work for MS Office files but not for others like .tiff, .txt, pdf..etc
if the file is not MS Office files, then the hr = pPropSet->Open(FMTID_Summary.... set the hr to FAILED.
It never get executed DumpBuiltInProps(pPropStg,appname);

<br />
bool GetAppName(char* filename,char *appname)<br />
	{<br />
			// Translate filename to Unicode.<br />
      WCHAR wcFilename[1024];<br />
      setlocale( LC_ALL, "" );<br />
      int i = mbstowcs(wcFilename, filename, strlen(filename));<br />
      setlocale( LC_ALL, "C" );<br />
      wcFilename[i] = 0;<br />
<br />
      HRESULT hr = S_OK;<br />
			IStorage* pStg = NULL;<br />
			hr = ::StgOpenStorageEx(wcFilename, STGM_READWRITE | STGM_TRANSACTED, STGFMT_DOCFILE, 0, NULL, NULL, IID_IStorage, (void**)&pStg);<br />
			if(FAILED(hr))<br />
			{<br />
				hr = ::StgOpenStorageEx(wcFilename, STGM_READWRITE | STGM_TRANSACTED, STGFMT_ANY, 0, NULL, NULL, IID_IStorage, (void**)&pStg);<br />
				if(FAILED (hr))<br />
					return false;<br />
			}<br />
			<br />
			IPropertySetStorage* pPropSet = NULL;<br />
			hr = pStg->QueryInterface(IID_IPropertySetStorage, (void**)&pPropSet);<br />
			if(FAILED(hr))<br />
			{<br />
				pStg->Release();<br />
				return false;<br />
			}<br />
			<br />
			IPropertyStorage *pPropStg = NULL;<br />
		<font color=red>	hr = pPropSet->Open(FMTID_SummaryInformation,STGM_READ|STGM_SHARE_EXCLUSIVE,&pPropStg);<br />
			if(FAILED(hr))<br />
			{<br />
				pPropSet->Release();<br />
				pStg->Release();<br />
				return false;<br />
			}</font><br />
			DumpBuiltInProps(pPropStg,appname);<br />
			<br />
			pPropSet->Release();<br />
			pStg->Release();<br />
			return true;<br />
			// Initialize PROPSPEC for the properties you want.<br />
    <br />
		<br />
	}<br />

Re: getting file property, help help help

Peter Weyzen1-Jul-03 11:35

Peter Weyzen

1-Jul-03 11:35

The code that you have works for programs that employ the OLE2 DOCFILE format. DOCFILE is a filesystem within a file.... It's a container system that stores virtual-file and virtual-directories within a single file.

The DOCFILE also has the ability to store a "summary" table -- represented by IPropertyStorage.

This kinda thing only works for DOCFILES. Other files are more difficult.

You CAN look into the registry (HKEY_CLASSES_ROOT), to find out what program is associated with your file extension. But if you don't have a file extension, then you're in trouble.

Without a file extension, I expect that you'd have to open the file to manually detect the format. (a pretty limited solution).

As a bit of unrelated trivia -- the Mac handles file associations without using filename extensions. They do all of this by saving useful data into the "resource fork" of the file. All files in the mac file system have a resource fork (I think)....

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br />
Peter Weyzen<br />
Staff Engineer<br />
<A HREF="http://www.santacruznetworks.com">Santa Cruz Networks</A>

Re: getting file property, help help help

David Crow12-Sep-03 9:36

David Crow

12-Sep-03 9:36

Try this:

bool GetAppName(char* filename,char *appname)
{
  // Translate filename to Unicode.
  WCHAR wcFilename[1024];
  setlocale( LC_ALL, "" );
  int i = mbstowcs(wcFilename, filename, strlen(filename));
  setlocale( LC_ALL, "C" );
  wcFilename[i] = 0;

  HRESULT hr = S_OK;
  IPropertySetStorage* pStg = NULL;
  hr = ::StgOpenStorageEx(wcFilename, STGM_READWRITE | STGM_TRANSACTED, STGFMT_DOCFILE, 0, NULL, NULL, IID_IStorage, (void**)&pStg);
  if(FAILED(hr))
  {
  hr = ::StgOpenStorageEx(wcFilename, STGM_READWRITE | STGM_TRANSACTED, STGFMT_ANY, 0, NULL, NULL, IID_IStorage, (void**)&pStg);
    if(FAILED (hr))
      return false;
  }

  /*IPropertySetStorage* pPropSet = NULL;
  hr = pStg->QueryInterface(IID_IPropertySetStorage, (void**)&pPropSet);
  if(FAILED(hr))
  {
    pStg->Release();
    return false;
  }*/

  IPropertyStorage *pPropStg = NULL;
  hr = pStg->Open(FMTID_SummaryInformation,STGM_READ|STGM_SHARE_EXCLUSIVE,&pPropStg);
  if(FAILED(hr))
  {
    pPropSet->Release();
    pStg->Release();
    return false;
  }
  
  DumpBuiltInProps(pPropStg, appname);

  pPropSet->Release();
  pStg->Release();
  return true;
}

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

creating an array of structures

johnstonsk1-Jul-03 5:44

johnstonsk

1-Jul-03 5:44

I am trying to create an array of structures.

The structure that I have created looks like this:

<br />
<br />
struct TSimSignal<br />
	{<br />
		<br />
		double Value[45];<br />
		int SimWriteFlag;<br />
		int data_index;<br />
		int DisplayReadFlag;<br />
		long TimeStamp;<br />
	<br />
	};<br />

My program has to write the entire structure to memory so, another program can read that chunk of memory and use the struct.
Here is the array that I created:

<br />
<br />
struct TSimHeader *header_ptr = new TSimHeader[1];<br />

I then try to add the TSimSignal to the array

Is this how you would doo this?

I think my array is an array of pointers to the structs, but How can I create an array that will hold the TSimSignal struct?

Thanks,
sj Smile | :)

Re: creating an array of structures

Manfred Staiger1-Jul-03 5:59

Manfred Staiger

1-Jul-03 5:59

Use a CArray template:

#include "afxtempl.h"
.
.
.
CArray<tsimheader, tsimheader=""> arrayName;
arrayName.SetSize(0,1);

Then you can simly use the the memberfunctions of CArray to Add/Insert/Delete... elements of the type TSimHeader.

Search MSDN for CArray for more info.

Hope that helps

MS

Re: creating an array of structures

David Crow1-Jul-03 6:08

David Crow

1-Jul-03 6:08

You can do something like:

struct TSimSignal
{
    double Value[45];
    int SimWriteFlag;
    int data_index;
    int DisplayReadFlag;
    long TimeStamp;
} TSimSignalArr[10];

struct TSimSignal
{
    double Value[45];
    int SimWriteFlag;
    int data_index;
    int DisplayReadFlag;
    long TimeStamp;
} *TSimSignalArr;

TSimSignalArr = new struct TSimSignal[10];

Re: creating an array of structures

johnstonsk1-Jul-03 6:30

johnstonsk

1-Jul-03 6:30

David,
I must be doing something wrong because
When I try that I get these errors:

d:\.h(30) : error C2501: 'TSimHeader_arr' : missing storage-class or type specifiers
d:\.h(30) : error C2040: 'TSimHeader_arr' : 'int' differs in levels of indirection from 'struct TSimHeader *'
d:\.h(30) : error C2440: 'initializing' : cannot convert from 'struct TSimHeader *' to 'int'
This conversion requires a reinterpret_cast, a C-style cast or function-style cast
d:\.cpp(164) : error C2275: 'TSimHeader' : illegal use of this type as an expression
d:\.h(20) : see declaration of 'TSimHeader'

I don't know why I get the error about trying to convert a pointer to an int?

<br />
 struct TSimHeader<br />
	{<br />
		char   *Name[45];<br />
		char   *Unit[45];<br />
		double  Min[45];	  <br />
		double  Max[45];					<br />
		int SignalCount;		<br />
		int SimStatus;<br />
		<br />
	}*TSimHeader_arr;<br />
<br />
TSimHeader_arr = new struct TSimHeader[10];<br />

Once I have added all the data that I need to the TSimHeader struct I'm trying to put that struct in position 0.

<br />
TSimHeader_arr[0] = TSimHeader;<br />

Thanks David,
your always helpful.
sj Smile | :)

Re: creating an array of structures

David Crow1-Jul-03 6:56

David Crow

1-Jul-03 6:56

johnstonsk wrote:
TSimHeader_arr[0] = TSimHeader;

Your TSimHeader variable shouldn't be the same name as the structure. That aside, once you have the members of this variable set accordingly, you need to do individual assignments to TSimHeader_arr[0], like:

TSimHeader_arr[0].Min = TSimHeaderVar.Min;<br />
TSimHeader_arr[0].Max = TSimHeaderVar.Max;<br />
TSimHeader_arr[0].SignalCount = TSimHeaderVar.SignalCount;<br />
etc.

Re: creating an array of structures

David Crow1-Jul-03 10:57

David Crow

1-Jul-03 10:57

Right. I did not initially suggest that as I saw no indication that MFC was being used. I use CArray and CList on a regular basis. I hear that std::vector has its merits, too.

Database Easy Question

Scozturk1-Jul-03 5:35

Scozturk

1-Jul-03 5:35

Hi! I'm a beginner and I am trying to make a database program and I am using filters to search something in it.
The user presses the search button and in a new dialog (in edit boxes) the user sees the matching result. This is fine but if there is 2 matching results it just shows the first! How can I make it to show the second one or the third? Can I put a "next" button in the dialog? I saw something like MoveNext() but I don't know how to use it... can someone help me?

Thank you for your future answers!

Re: Database Easy Question

David Crow1-Jul-03 6:09

David Crow

1-Jul-03 6:09

Sounds like you need a listbox instead of an edit control. If you must have an edit control, it needs to be multiline.

Re: Database Easy Question

Toni781-Jul-03 18:58

Toni78

1-Jul-03 18:58

There is nothing wrong with using filters in the database but there is search function as well. Now I don't know whether you're using ADO or not but there if you use filters the recordset pointer will be moved to the first record (if there is a match). If there are more than one records, then you simple call the function MoveNext(). There is nothing fancy in doing that. Maybe you could post some source code...
i.e.

_RecordsetPtr m_pRs;
// Initialize and do whatever you do
...
// Set the filter
...
m_pRs->MoveNext();

// Afterall, I realized that even my comment lines have bugs

When one cannot invent, one must at least improve (in bed).-My latest fortune cookie

Modeless Dialogs

Jay Hova1-Jul-03 5:35

Jay Hova

1-Jul-03 5:35

Hi,

I did a search on how to create a modeless dialog window and got some great things.
I did follow one of the articles on how to do this, and it worked great for dialogs that pop up when choosing it from a menu.

However, I also want to do the same thing when I click on an "OK" button of a modal dialog. Basically I want to close the modal and have the modeless dialog come up.

I am using the code:

void CSendTo::OnOK() <br />
                       {<br />
	                    //CDialog::OnOK();<br />
		            if (!m_pCommandOpt)<br />
                                m_pCommandOpt = new CMainCommand;<br />
<br />
                            if (!::IsWindow(m_pCommandOpt->GetSafeHwnd()))<br />
                                m_pCommandOpt->Create(IDD_MAIN_TAB_DIALOG, this);<br />
 <br />
                            m_pCommandOpt->ShowWindow(SW_SHOWNORMAL); <br />
	<br />
	                   //CDialog::OnOK();<br />
                       }

If I remove the either of the comments in front of CDialog::OnOK() it closes both windows and only flashes the modeless window for a second on screen. If I leave it commented out it keeps the modal window on screen and pops up the second window which seems to be MODAL. If i close the second window the first window is still there

MUCH THANKS IN ADVANCE!!!!

Re: Modeless Dialogs

valikac1-Jul-03 5:39

valikac

1-Jul-03 5:39

There are several solutions. One solution is messages. In OnOK(), send a message to the modal dialog box parent and have it create a modeless dialog box.

Kuphryn

Re: Modeless Dialogs

David Crow1-Jul-03 6:23

David Crow

1-Jul-03 6:23

I've never tried anything like this but so my suggestion may be way off. Perhaps the issue lies in the call to Create(). By specifying a parent, the child dialog goes away as soon as its parent goes away. Remove the 'this' parameter and note the results.

Re: Modeless Dialogs

Jay Hova1-Jul-03 6:37

Jay Hova

1-Jul-03 6:37

Thanks for all your help.

Looks like i don't need the window to be modeless anyways.

BTW, David you were right! I feel so silly not even thinking about that. Poke tongue | ;-P

Once again, thank you!

Problem with COMIP.H

ThaisFurlan1-Jul-03 5:01

ThaisFurlan

1-Jul-03 5:01

When compiling my application I am receiving the following error:

c:\program files\microsoft visual studio\vc98\include\comip.h(690) : error C2227: left of '->QueryInterface' must point to class/struct/union
c:\program files\microsoft visual studio\vc98\include\comip.h(195) : see reference to function template instantiation 'long __thiscall _com_ptr_t<class _com_iiid<struct="" msxml::ixmldomnode,&struct="" __s_guid="" _guid_2933bf80_7b36_11d2_b20e_00c04
f983e60=""> >::_QueryInterface(const char (&)[6])' being compiled

What can I do to solve this problem? Or what are the possible mistakes that could cause this error?

Thanks!

Thais

audio settings in xp - help

alonk1-Jul-03 4:29

alonk

1-Jul-03 4:29

hi,
i have the following code that works fine on win98,2000 and NT.
In windows XP it changes the recording channel from microphone to the line-in and i dont know why.
can anyone help?

if ( !m_bInitialized )
return;
bool bAnyEnabled = false;
MMRESULT mmResult;

MIXERLINE lineDestination;
memset( &lineDestination, 0, sizeof(MIXERLINE) );
lineDestination.cbStruct = sizeof(MIXERLINE);
lineDestination.dwComponentType = MIXERLINE_COMPONENTTYPE_DST_WAVEIN;
mmResult = mixerGetLineInfo( (HMIXEROBJ)m_dwMixerHandle, &lineDestination, MIXER_GETLINEINFOF_COMPONENTTYPE );
if ( mmResult != MMSYSERR_NOERROR )
{
TRACE(".InputMicVolume: FAILURE: Could not get the Destination Line while enabling. mmResult=%d\n", mmResult );
return;
}
// Getting all line's controls
int nControlCount = lineDestination.cControls;
int nChannelCount = lineDestination.cChannels;
MIXERLINECONTROLS LineControls;
memset( &LineControls, 0, sizeof(MIXERLINECONTROLS) );
MIXERCONTROL* aControls = (MIXERCONTROL*)malloc( nControlCount * sizeof(MIXERCONTROL) );
if ( !aControls )
{
TRACE(".InputMicVolume: FAILURE: Out of memory while enabling the line.\n" );
return;
}
memset( &aControls[0], 0, sizeof(nControlCount * sizeof(MIXERCONTROL)) );
for ( int i = 0; i < nControlCount; i++ )
{
aControls[i].cbStruct = sizeof(MIXERCONTROL);
}
LineControls.cbStruct = sizeof(MIXERLINECONTROLS);
LineControls.dwLineID = lineDestination.dwLineID;
LineControls.cControls = nControlCount;
LineControls.cbmxctrl = sizeof(MIXERCONTROL);
LineControls.pamxctrl = &aControls[0];
mmResult = mixerGetLineControls( (HMIXEROBJ)m_dwMixerHandle, &LineControls, MIXER_GETLINECONTROLSF_ALL );
if ( mmResult == MMSYSERR_NOERROR )
{
for ( i = 0; i < nControlCount; i++ )
{
if ( aControls[i].dwControlType & MIXERCONTROL_CT_UNITS_BOOLEAN )
{
MIXERCONTROLDETAILS_BOOLEAN* aDetails = NULL;
int nMultipleItems = aControls[i].cMultipleItems;
int nChannels = nChannelCount;
// MIXERCONTROLDETAILS
MIXERCONTROLDETAILS ControlDetails;
memset( &ControlDetails, 0, sizeof(MIXERCONTROLDETAILS) );
ControlDetails.cbStruct = sizeof(MIXERCONTROLDETAILS);
ControlDetails.dwControlID = aControls[i].dwControlID;

if ( aControls[i].fdwControl & MIXERCONTROL_CONTROLF_UNIFORM )
{
nChannels = 1;
}

if ( aControls[i].fdwControl & MIXERCONTROL_CONTROLF_MULTIPLE )
{
nMultipleItems = aControls[i].cMultipleItems;
aDetails = (MIXERCONTROLDETAILS_BOOLEAN*)malloc(nMultipleItems*nChannels*sizeof(MIXERCONTROLDETAILS_BOOLEAN));
if ( !aDetails )
{
TRACE(".InputMicVolume: FAILURE: Out of memory while enabling the line.\n" );
continue;
}
for ( int nItem = 0; nItem < nMultipleItems; nItem++ )
{
LONG lValue = FALSE;
if ( nItem == (int)m_uSourceLineIndex )
lValue = TRUE;
for ( int nChannel = 0; nChannel < nChannels; nChannel++ )
{
aDetails[nItem+nChannel].fValue = lValue;
}
}

ControlDetails.cChannels = nChannels;
ControlDetails.cMultipleItems = nMultipleItems;
ControlDetails.cbDetails = sizeof(MIXERCONTROLDETAILS_BOOLEAN);
ControlDetails.paDetails = &aDetails[0];
mmResult = mixerSetControlDetails( (HMIXEROBJ)m_dwMixerHandle, &ControlDetails, 0L );
if ( mmResult == MMSYSERR_NOERROR )
{
TRACE(".InputMicVolume: Enabling Line: Line control \"%s\" has been enabled.\n", aControls[i].szShortName );
bAnyEnabled = true;
}
free( aDetails );

}
}
}
} else {
TRACE(".InputMicVolume: FAILURE: Could not get the line's controls while enabling. mmResult=%d\n", mmResult );
}
free( aControls );
if ( !bAnyEnabled )
{
TRACE(".InputMicVolume: WARNING: No controls were found for enabling the line.\n" );
}

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