C / C++ / MFC

How to detect Floppy Arrival

23-Oct-07 20:37

Or you can use of WM_SETTEXT.

Read Images from IE

vikrant kpr23-Oct-07 5:28

vikrant kpr

23-Oct-07 5:28

Hey Friends
I am calling the function get_images but finally i could not figure out it's path

Need Help.

Regards
IHTMLElementCollection* pColl = NULL;
hr = pHtmlDoc->get_images (&pColl);
..
long nLength = 0;
pColl->get_length (&nLength);

for (int i = 0; i < nLength && bSearch; i++)
{
hr = pElemDispatch->QueryInterface (IID_IHTMLElement, (void**)&pElem);
if (SUCCEEDED (hr) && (pElem != NULL))
{
//I got an Image but how to read it?
//Could not find even its path??
}

}

Re: Read Images from IE

Nathan Holt at EMOM23-Oct-07 7:24

Nathan Holt at EMOM

23-Oct-07 7:24

Did you try querying the interface for IPicture? Also, I didn't see any code for getting pElemDispatch from pColl.

Nathan

desktop capture

amit.code23-Oct-07 2:08

amit.code

23-Oct-07 2:08

hi.. my program is about to capture the dektop by creating compatible dc and compatible bitmap and than convert it from ddb to dib. But I want to compress it before storing it in DAT format. How to proceed with this

prashant

Re: desktop capture

James R. Twine23-Oct-07 2:45

James R. Twine

23-Oct-07 2:45

   Since you mention a specific format (DAT), it is unclear if you mean that you want to scale the image before storing it, or if you really mean data compression.

   Scaling can be done in a coarse fashion by drawing the image to a target DC with reduced target width and height values. GDI+ offers functions that may make a better quality image, as will a dedicated graphics library.

   If you really mean data compression, which should happen after the image is first converted to its target format (DAT?), then you can use a library like ZLIB[^].

   Lastly, if you meant tape backup (or other offline/removable storage) when you said "DAT", then ZLIB helps there, too.

   Peace!

-=- James
Please rate this message - let me know if I helped or not!<HR>If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
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Re: desktop capture

amit.code23-Oct-07 3:12

amit.code

23-Oct-07 3:12

Thanks James for reply.I mean data compression. I will go through the link about ZLIB. Thanx

prashant

VC_RYK23-Oct-07 0:29

VC_RYK

23-Oct-07 0:29

Hi guys
i want to detect Floppy arrival but 'WM_DEVICECHANGE' does not work for floppy so is there anyway to detect Floppy arrival.

with regards
RYK

ThatsAlok23-Oct-07 1:05

ThatsAlok

23-Oct-07 1:05

VC_RYK wrote:
i want to detect Floppy arrival but 'WM_DEVICECHANGE' does not work for floppy so is there anyway to detect Floppy arrival.

Actually Floppy Drive doesn't work the way CD Drive work. I mean, you could simply put Floppy in the drive, but to make Computer aware you have to click on floppy icon, which is not in case of cd drive. thats just my logical conclusion!

"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
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Hamid_RT23-Oct-07 1:19

23-Oct-07 1:19

I think its not good way but he can uses of SetCurrentDirectory check return value if its nonzero it has floppy.

ThatsAlok23-Oct-07 1:25

ThatsAlok

23-Oct-07 1:25

Hamid. wrote:
I think its not good way but he can uses of SetCurrentDirectory check return value if its nonzero it has floppy.

But you have to poll regularly for that.. i don't think thats good design and could present user headache, as if floppy is corrupt, it could hang the system!

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
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Hamid_RT23-Oct-07 1:30

23-Oct-07 1:30

Well I said its not good idea but I dont think it hang the system.

ThatsAlok23-Oct-07 1:59

ThatsAlok

23-Oct-07 1:59

Hamid. wrote:
Well I said its not good idea but I dont think it hang the system.

well you have to test that yourself Poke tongue | ;-P

try putting corrupt floppy into your computer and acess it through My COmputer!

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
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Hamid_RT23-Oct-07 2:24

23-Oct-07 2:24

I dont use of floppy disk.;P

ThatsAlok23-Oct-07 19:34

ThatsAlok

23-Oct-07 19:34

Hamid. wrote:
I dont use of floppy disk.

USe ZIP Drive then Poke tongue | ;-P

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
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Hamid_RT23-Oct-07 20:29

23-Oct-07 20:29

James R. Twine23-Oct-07 1:38

James R. Twine

23-Oct-07 1:38

   PC floppy drives have (or used to have) a active low Disc Change line, which went high (1) when the drive was empty and was low (0) when a disc was inserted.

   Not sure if/how you can get direct access to that line on Win32, though...

   Maybe there is an LVM routine that can be used?

   Peace!

Naveen23-Oct-07 3:04

Naveen

23-Oct-07 3:04

with the help of WMI, you can find out the arrival and removal of floppy drives and offourse all other drives.

nave

[OpenedFileFinder]

ThatsAlok23-Oct-07 19:51

ThatsAlok

23-Oct-07 19:51

Naveen.R wrote:
with the help of WMI, you can find out the arrival and removal of floppy drives and offourse all other drives.

Hi Naveen,
could you please help me in finding out the exact WMI Class , which could help me in this purpose.. it could work as wonderfull tip for my FAQ site. if you allow i will publish that with you name.

Thanks
Alok

cheers,
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Hamid_RT23-Oct-07 20:37

23-Oct-07 20:37

I saw two classes Win32_FloppyController/Win32_FloppyDrive.

[SOLVED] Current system date

Naveen23-Oct-07 21:08

Naveen

23-Oct-07 21:08

ThatsAlok wrote:
could you please help me in finding out the exact WMI Class

Any thing for you sir Smile | :)

Actaully I tried this for one of my project requirment. I used the ExecNotificationQueryAsync() function with the following query.

HRESULT hres = pSvc->ExecNotificationQueryAsync(<br />
        _bstr_t("WQL"), <br />
        _bstr_t("SELECT *" <br />
         "FROM __InstanceOperationEvent WITHIN 1 "<br />
         "WHERE TargetInstance ISA 'Win32_LogicalDisk'"), <br />
         WBEM_FLAG_SEND_STATUS, NULL, pStubSink );

And in the notification handler we can check the instance is __InstanceCreationEvent and __InstanceDeletionEvent for any drive arrival or removal. But if you want disk arrival or removal you may need to handle the __InstanceModificationEvent( this one i didnt check ).

nave

[OpenedFileFinder]

CodingLover23-Oct-07 0:14

CodingLover

23-Oct-07 0:14

Hi all,

Say I have a CString and I want to assign the current system date on a MFC application click event. How can I do it.

Thanks

I appreciate your help all the time...
Eranga Smile | :)

ThatsAlok23-Oct-07 0:21

ThatsAlok

23-Oct-07 0:21

Eranga Thennakoon wrote:
Say I have a CString and I want to assign the current system date on a MFC application click event. How can I do it.

CTime::GetCurrentTime and CTime::Format!

cheers,
Alok Gupta
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chandu00423-Oct-07 0:21

chandu004

23-Oct-07 0:21

use as follows
CTime time;
CString str;
time=CTime::GetCurrentTime();
str.Format("%d:%d:%d",time.GetDay(),time.GetMonth(),time.GetYear());
good luck.

-----------------------------------------

Suggestion to the members:
prefix your main thread subject with [SOLVED] if it is solved.
chandu.

ThatsAlok23-Oct-07 0:26

ThatsAlok

23-Oct-07 0:26

i might beat you by second!

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