C / C++ / MFC Discussion Boards

Re: Delete file from temporary internet files?

Michael Dunn22-Sep-05 6:19

Michael Dunn

22-Sep-05 6:19

Check out DeleteUrlCacheEntry()

--Mike--
Visual C++ MVP Cool | :cool:

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Re: Delete file from temporary internet files?

C^hris L^osinger22-Sep-05 6:22

C^hris L^osinger

22-Sep-05 6:22

to get that path, see SHGetFolderLocation and SHGetFolderLocation

Cleek | Image Toolkits | Thumbnail maker

Re: Delete file from temporary internet files?

Ravi Bhavnani22-Sep-05 6:36

Ravi Bhavnani

22-Sep-05 6:36

DanYELL wrote:
instead of going to the internet and downloading the file, on some
computers it goes to the temporary internet files folder and
just reloads that file

Specifying the INTERNET_FLAG_RELOAD flag will force a download of the requested file from the server instead of trying to load a cached version.

/ravi

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Re: Delete file from temporary internet files?

DanYELL22-Sep-05 14:47

DanYELL

22-Sep-05 14:47

I use this code:

hr = URLDownloadToFile ( NULL,
sURL, // URL to get
sFile, // file to store data in
0, // reserved
&callback // ptr to IBindStatusCallback
);

Is there anyway to specify that flag, INTERNET_FLAG_RELOAD, with
the function URLDownloadToFile or so I need to use
CInternetSession to download a file with that flag so that it
bypasses the cache?

Please, any response you can give me will be greatly appreciated.

Sincerely,
Danielle Brina (an overworked graduate student)

Re: Delete file from temporary internet files?

Ravi Bhavnani23-Sep-05 1:56

Ravi Bhavnani

23-Sep-05 1:56

Unfortunately, the flag applies to HttpOpenRequest() and InternetOpenUrl() (among others) but not URLDownloadToFile(). Frown | :(

/ravi

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Tray Icon Menu Command handling in MFC

pritamkd22-Sep-05 5:06

pritamkd

22-Sep-05 5:06

I have a MFC App with a Tray Icon. On Right clicking the Tray Icon i get a small 'Exit' menu and then on clicking on that i need to exit the App, but thats not happening, and the second time i click there's an assertion.

On the handler for the Exit button, i call DestroyWindow();

Also i am overloading the WM_WINDOWPOSCHANGED as said in this article.

http://www.codeproject.com/dialog/dlgboxtricks.asp

Any help here?????

Pritam

Re: Tray Icon Menu Command handling in MFC

Laffis22-Sep-05 5:57

Laffis

22-Sep-05 5:57

Try AfxPostQuitMessage(0) before you call DestroyWindow.
You may even not need to call the latter.

Re: Tray Icon Menu Command handling in MFC

Laffis22-Sep-05 6:01

Laffis

22-Sep-05 6:01

Try AfxPostQuitMessage(0) before you call DestroyWindow.
You may even not need to call the latter.

And I recommend you to call CDialog::onClose/OnOK instead of DestroyWindow (if u debug into it, you see the framework does more work just destrywindow). If you use SDI/MDI, try to use the mainframe to intercept the exit message, and after u tidy up things, call the baseclass onclose().

Re: Tray Icon Menu Command handling in MFC

David Crow22-Sep-05 7:31

David Crow

22-Sep-05 7:31

What is the ID of the Exit menu option? Do you have a handler in place for that ID? If so, what are you doing in that handler function?

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Re: Tray Icon Menu Command handling in MFC

pritamkd23-Sep-05 3:20

pritamkd

23-Sep-05 3:20

I tried AfxPostQuitMessage(0) but didn't work.

Basically, i have put a WM_COMMAND handler function where i check if the ID is TRAY_EXIT (thats the id of the Exit Menu option) and try to call AfxPostQuitMessage() there. But nothing happens.

I ran DebugView to capture win32 and ran the app. But DebugView says:

>>routing command id 0x8003 sent to app
>>IGNORING command id 0x8003 sent to Cdialog Dialog

(0x8003 is the TRAY_EXIT number)

Is there a better way to handle creating a menu and providing exit option and then handling it??????

Looks like i am missing something here............

Pritam

Re: Tray Icon Menu Command handling in MFC

David Crow23-Sep-05 3:51

David Crow

23-Sep-05 3:51

pritamkd wrote:
I tried AfxPostQuitMessage(0) but didn't work.

If you are simply wanting to exit your application, just send it a WM_CLOSE message. If it is a dialog-based application, call EndDialog().

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Re: Tray Icon Menu Command handling in MFC

pritamkd23-Sep-05 3:59

pritamkd

23-Sep-05 3:59

Hey Folks!, i got the idea!

i didn't have a proper handler in place for the TRAY_EXIT message. My bad!!! Frown | :(

Anyway , thanks a lot for your help!!!! Smile | :)

Pritam

Edit Box, not able to read

tejaswi-teja22-Sep-05 4:53

tejaswi-teja

22-Sep-05 4:53

hi
I am tejaswi . I wanted to read the contents from editboxes of a dialog window. am able to do so except for one edit box. That is apperaring on the screen as if it is read only. but not even able to copy the contents of that one manually. The caret is not coming there even if i click on the box with mouse. please tell how to read contents of it. any property is to be set or what.

Thank you. Tejaswi

Re: Edit Box, not able to read

Laffis22-Sep-05 5:46

Laffis

22-Sep-05 5:46

Did you check the edit box 'read-only' setting?
Did you check the DDX_Control has its entry?
Did you call UpdateData(FALSE) at the wrong time?

Re: Edit Box, not able to read

Eytukan22-Sep-05 6:42

Eytukan

22-Sep-05 6:42

y not u delete the control and place a new one? Unsure | :~

Re: Edit Box, not able to read

David Crow22-Sep-05 7:15

David Crow

22-Sep-05 7:15

What does the code look like that is attempting to read from that edit control? Is this an MFC application?

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Re: Edit Box, not able to read

22-Sep-05 21:23

yes yes it is an MFC application using the Cwnd Class. first of all , the application that has created that edit control is a different one. not under our control. i am j ust trying to read from the window "Histograms" generated by that application( Vims Configuration Tool). I am trying to do this by using available functinos like FindWindow("Histogram"),GetTopWindow(),GetNextWindow().. like that getting all controls and then using SendMessage(WM_GETTEXT...). and now the problem is for the window that is disabled(seems to be i dont know exatly) but data is visible.
i am not even getting a handle to it .some other windows that are disabled i found using a function sth like CSnd:: isEnabled .but in that list also the one i am talking about is not there.

-- modified at 3:27 Friday 23rd September, 2005

Re: Edit Box, not able to read

David Crow23-Sep-05 3:53

David Crow

23-Sep-05 3:53

tejaswi_teja wrote:
...now the problem is for the window that is disabled(seems to be i dont know exatly) but data is visible.

Whether a window is disabled or not, you can still read text from it. If you really need to know its enabled state, use IsWindowEnabled().

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Problem with webcam image capture

SimCom22-Sep-05 4:47

SimCom

22-Sep-05 4:47

Hello best programmers,

I coded an application wich can display imagestream from a simple webcam. I found a good class (I guess) for capturing AVI from webcam to perform several functions etc... I found it here in Codeproject, some Russian dude encapsulated the functions of VFW class.

Anyway, I tried to find a lot of useful information how to capture from webcam, but unfortunatly I found only descriptions of wich functions it has.
And believe me there is a lot of functions, and a lot os useless functions for me.

What I tried to do is making a simple dialogbox with a startbutton, when you click on start, the webcam is turned on and you'll see yourself on the dialogbox.

I coded it as follows:

void CCamSampDlg::OnStart()
{
CRect rect; // Here I try to display the imagestream

WebCam.Create(WS_CHILD|WS_VISIBLE|WS_CLIPSIBLINGS,rect,this,TRUE);
WebCam.ConnectWithDriver(-1);
WebCam.SetPreviewRate(100);
WebCam.StartPreview(TRUE);

}

It's actually very easy, but the PROBLEM is, when you click on start, the camera turns on (cause I see the activation LED blinking), but it shows nothing on the dialogbox. So I think there something missing in the part of Create-function.

Can somebody please help me??
Thank you very very much!!!

If my application works, I forget all my problems.

Re: Problem with webcam image capture

SimCom22-Sep-05 11:21

SimCom

22-Sep-05 11:21

Hello boyz,

I see nobody replied on my question D'Oh! | :doh:

, can somebody please help me?? Cry | :((

If my application works, I forget all my problems.

How to remove Host Protected Area (HPA) on ATA Hard Disk in Windows?????

nagamohan_p22-Sep-05 4:44

nagamohan_p

22-Sep-05 4:44

I wish to remove Host Protected Area (HPA) on ATA Hard Disk in Windows...I don't want to write driver i.e, it should be done through API call...Please send me the solution asap.....

Best Regards,
mohan

Saving PIDL to disk / registry

Skute22-Sep-05 4:29

Skute

22-Sep-05 4:29

Hi, does anyone know how i can save a PIDL to disk or registry so that i can easily read it back in again? I need to store the last directory that the user was looking at, obviously this can be a virtual directory such as "My Network Places", so storing a path isnt a suitable option.

Any help much appreciated,

Thanks

Skute

-- modified at 10:41 Thursday 22nd September, 2005

Also, i need it to get around the following:

Parsing the virtual item "Desktop"'s pidl, results in the following path:
C:\Documents And Settings\username\Desktop

when using
SHGetPathFromIDList
or
IShellFolder->GetDisplayNameOf

I would like it to return the GUID of the desktop, or some other way of identifying it, without going to the actual location on disk (in my eyes they should be 2 different entities, the real one on disk lists just files and folders, the virtual one lists my computer, recycle bin etc).

Re: Saving PIDL to disk / registry

David Crow22-Sep-05 4:39

David Crow

22-Sep-05 4:39

Skute wrote:
Hi, does anyone know how i can save a PIDL to disk or registry so that i can easily read it back in again?

You can store it as REG_BINARY or REG_DWORD.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Re: Saving PIDL to disk / registry

Eytukan22-Sep-05 6:55

Eytukan

22-Sep-05 6:55

your service needed Frown | :(

ATL

Re: Saving PIDL to disk / registry

David Crow22-Sep-05 7:28

David Crow

22-Sep-05 7:28

It is unclear to me what you are asking or commenting about?

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

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