C / C++ / MFC

Re: How to Get USB attached Devices ' name using setupDi calls ?

4-Jun-13 21:27

When already using Setup API functions, call one that accepts a pointer to a SP_DEVINFO_DATA structure (e.g. SetupDiGetDeviceInterfaceDetail() or SetupDiEnumDeviceInfo()). Then call SetupDiGetDeviceRegistryProperty() passing the structure to get the SPDRP_FRIENDLYNAME property which contains the name as shown by Windows. If that fails, you can fallback to get the SPDRP_DEVICEDESC property.

002comp5-Jun-13 0:58

Re: How to Get USB attached Devices ' name using setupDi calls ?

5-Jun-13 0:58

Thanks For your Reply.
I tried Friendlyname,it is returning NULL. then I tried DeviceDesc , it is returning
"USB PRINTING SUPPORT " for each USB connected Printer.

I tried by passing SPDRP_MFG even, it is returning Microsoft.

Any other way to get name so, I can differentiate.

Thanks & Regards
Y

Jochen Arndt5-Jun-13 1:16

Re: How to Get USB attached Devices ' name using setupDi calls ?

5-Jun-13 1:16

It seems that you have enumerated the generic Microsoft USB printing support devices. You should look up the specific printers instead which usually provide a friendly name. If that did not provide the device path, you must perform two enumerations and compare common data (e.g. the hardware ID).

002comp5-Jun-13 2:15

Re: How to Get USB attached Devices ' name using setupDi calls ?

5-Jun-13 2:15

Ahh, But I used Class ID
#define CLSID_STR_WEIUSB (L"{28D78FAD-5A12-11D1-AE5B-0000F803A8C2}") to get List of USB Printer Devices.
I tried one another too #define CLSID_STR_WEIUSB1 (L"{A5DCBF10-6530-11D2-901F-00C04FB951ED}")
but this one was not showing some of printers while Enumerating.

Give me some Idea.How can I look up specific printers only and their Friendlynames?

Regards
Y

Jochen Arndt5-Jun-13 2:49

Re: How to Get USB attached Devices ' name using setupDi calls ?

5-Jun-13 2:49

Those IDs seem to belong to specific devices.

It is often difficult to get the proper GUID. See System-Defined Device Setup Classes[^] for a list of GUIDs. You may try the Printers GUID from that list and if that does not find all try also the USB Devices GUID.

002comp5-Jun-13 3:00

Re: How to Get USB attached Devices ' name using setupDi calls ?

5-Jun-13 3:00

I tried system Defined specific printer GUID and USB GUID too.

Printer = {4d36e979-e325-11ce-bfc1-08002be10318}
USB = {88BAE032-5A81-49f0-BC3D-A4FF138216D6}

but in this case it is not providing any device while enumerating.

Y

Jochen Arndt5-Jun-13 3:13

Re: How to Get USB attached Devices ' name using setupDi calls ?

5-Jun-13 3:13

What are the other parameters passed to SetupDIGetClassDevs()?

Maybe this link may also help you: http://stackoverflow.com/questions/10651949/figuring-which-printer-name-corresponds-to-which-device-id[^].

For specific printers you may also get the GUID from the INF file of the printer. But this may again provide no friendly name.

002comp5-Jun-13 18:10

Re: How to Get USB attached Devices ' name using setupDi calls ?

5-Jun-13 18:10

I am using it like this

C++

#define CLSID_STR_WEIUSB1 (L"{A5DCBF10-6530-11D2-901F-00C04FB951ED}")

GUID     DevClass;    // CLSID holder for the WEIUSB device class

CLSIDFromString(CLSID_STR_WEIUSB1, &DevClass);

SetupDiGetClassDevs(
        &DevClass, // Only get WEIUSB devices
        NULL,      // Not specific to any bus
        NULL,      // Not associated with any window
        DIGCF_DEVICEINTERFACE + DIGCF_PRESENT

002comp5-Jun-13 18:40

Re: How to Get USB attached Devices ' name using setupDi calls ?

5-Jun-13 18:40

I found another fn but I don't know it is useful or am I using it Wrong ?

SetupDiOpenDeviceInterfaceRegKey

C++

Passing SP_DEVICE_INTERFACE_DATA  DevNode which we Get from SetupDiEnumDeviceInterfaces


HKEY hKey = SetupDiOpenDeviceInterfaceRegKey(hDevInfoSet,&DevNode,0,KEY_READ);
RegQueryValueEx(hKey,_T("Port"),NULL,NULL,(LPBYTE)buf,&dwBufSize);

But When I tried buf is coming NULL always.
Is it Right way to find from resitry?

Regards
Y

Jochen Arndt5-Jun-13 21:16

Re: How to Get USB attached Devices ' name using setupDi calls ?

5-Jun-13 21:16

The GUID you are using is GUID_DEVINTERFACE_USB_DEVICE[^]. You should use this or a similar name when not using the predefined one. Using this GUID, you are enumerating the raw USB devices which may not provide the user friendly name.

You also may have a look at the USBView sample application[^].

To check if there is any entry for your printers with the user friendly name, enumerate all devices (GUID NULL, DIGCF_ALLCLASSES) and compare the hardware ID or other properties with those found enumerating the raw devices.

Erudite_Eric5-Jun-13 8:16

Erudite_Eric

5-Jun-13 8:16

Look at handling plug an play in applications. The DDK has a ection on it, and it gives a lot of detail on device enumeration.

==============================

Nothing to say.

Regular expressions send different result in Visual Studio 2010 and Visual Studio 2008

BadJerry4-Jun-13 6:19

BadJerry

4-Jun-13 6:19

The following code returns isMatch true in VS 2008 not in VS 2010

CString strPattern = _T("(\\+|00)\\s*\\d{2}(\\s?\\d{3}){2}\\s?\\d{4}");
CString strValue = _T("0044 207 689 0000");
CT2CA pszFind(strPattern);
const std::tr1::regex pattern(pszFind ,std::tr1::regex_constants::nosubs | std::tr1::regex_constants::ECMAScript);

CT2CA pszData(strValue);
std::string strSearch(pszData);

isMatch = regex_search(strSearch.begin(), strSearch.end(), pattern);

Any idea why?
Thanks in advance

How to mute sound from the speakers in any video file ....MFC.?

mbatra313-Jun-13 19:44

Re: How to mute sound from the speakers in any video file ....MFC.?

3-Jun-13 19:44

Hi,

I am working on a project in which I am using DirectShow to play audio and video files. I have used a volume button, the state of which indicates whether Audio is On/Off. On clicking this button, I want to mute the sound from the speakers while video file continue playing. Is there any method to do so.?

Your help will be appreciated.

Regards,
Mbatra

ThatsAlok3-Jun-13 20:01

ThatsAlok

3-Jun-13 20:01

mbatra31 wrote:
On clicking this button, I want to mute the sound from the speakers while video file continue playing. Is there any method to do so.?

waveOutSetVolume [^] window api

Edit....
David already answer that Here[^]

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
Never mind - my own stupidity is the source of every "problem" - Mixture

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

modified 4-Jun-13 2:31am.

Re: How to mute sound from the speakers in any video file ....MFC.?

David Crow4-Jun-13 3:53

David Crow

4-Jun-13 3:53

See here.

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous

How to Pause and continue the Progress bar in MFC.?

mbatra313-Jun-13 19:39

Re: How to Pause and continue the Progress bar in MFC.?

3-Jun-13 19:39

Hi,

I am working on a project program that have the popup progress bar with "continue" and "pause" buttons in the dialog. I have the problem to pause and to continue the progress. For example, when the progress dialog starts, the user click on the "pause" button, the progress bar must be paused until the "continue" button is pressed but I don't know how to pause the progress when the pause button is pressed and how to continue the progress bar when the continue button is pressed.

Any help will be appreciated.

Regards,
Mbatra

ThatsAlok3-Jun-13 20:09

ThatsAlok

3-Jun-13 20:09

mbatra31 wrote:
but I don't know how to pause the progress when the pause button is pressed and how to continue the progress bar when the continue button is pressed.

stop function which calling ProgressCtrl.StepIt() function!, during the time user pressed pause!

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

Re: How to Pause and continue the Progress bar in MFC.?

mbatra313-Jun-13 20:20

Re: How to Pause and continue the Progress bar in MFC.?

3-Jun-13 20:20

Hi,

Thanx for the reply. I have used ProgressCtrl.StepIt() function inside OnTimer() so that while playing the video, timer will increment and progress bar also steps up.

I Can't stop this one. Because In StopTimer function I have set the state of the timer and progress bar to zero.

Basically I am incrementing the Progress Bar along with the timer. When User Presses Pause button, both the progress bar as well as timer should stop at their current state. ANd when user presses play button Timer and progress bar should continue from their last stopped state.

I have used ProgressBarCtrl.SetState(PBST_PAUSED); function, this works and progress bar stops at its current state, but its not so smooth, when user presses play button, progress bar increments by not just 1 step, but 3 -4 steps. Also I am not able to stop the timer. it keeps on incrementing.

Please let me know your idea / suggestion to solve this.

Regards,
Mbatra

ThatsAlok3-Jun-13 20:29

ThatsAlok

3-Jun-13 20:29

mbatra31 wrote:
I Can't stop this one. Because In StopTimer function I have set the state of the timer and progress bar to zero.

you might need to decouple both! either create new functions like PauseTimer(BOOL bPause), that decision on stopping and starting of timer in that function, without actually modifying your timer or progressctrl state.

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

Re: How to Pause and continue the Progress bar in MFC.?

mbatra313-Jun-13 21:28

Re: How to Pause and continue the Progress bar in MFC.?

3-Jun-13 21:28

Hi,

I was able to Pause the progress Bar on clicking Pause btn and again start from the same position on Play button, But Still unable to do the same for Timer.

I am using this piece of code to get the current time elapsed and display the same in the static and also stop the timer at that point.

KillTimer(nVID);
m_VideoPlay = 0;

GetTime = CTime::GetCurrentTime();

CString t = GetTimeElapsed(GetTime);
mStaticElapsedTime.SetWindowTextW(t);

GetTimeElapsed

() function returns the time in CString format (00:00:00) to display in a static box.

KillTimer function not working here.

Regards,
Mbatra

ThatsAlok3-Jun-13 22:37

ThatsAlok

3-Jun-13 22:37

mbatra31 wrote:
m_VideoPlay = 0;

what is the role of above

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

Re: How to Pause and continue the Progress bar in MFC.?

mbatra313-Jun-13 22:44

Re: How to Pause and continue the Progress bar in MFC.?

3-Jun-13 22:44

Hi,

this is the return value from SetTimer function.

m_VideoPlay = SetTimer(Event ID, 500, NULL);

Now I was able to stop the progress bar and the timer also, but how to start the timer from the same position when user clicks on play button.

Suppose if user has paused the video at 6 secs, then when the user clicks on the play button timer should start from 6 sec only.

Any idea about this scenario.

Regards,
Mbatra

ThatsAlok3-Jun-13 23:43

ThatsAlok

3-Jun-13 23:43

mbatra31 wrote:
Suppose if user has paused the video at 6 secs, then when the user clicks on the play button timer should start from 6 sec only.

which control are you using to display the video!

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

Re: How to Pause and continue the Progress bar in MFC.?

mbatra313-Jun-13 23:51