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using SetupDiXxx functions:
I have got a DevicePath
\\?\usbstor#disk&ven_fujitsu&prod_memorybird&rev_1.14#0739035033a1&0#{53f563
07-b6bf-11d0-94f2-00a0c91efb8b}.
then use function GetLogicalDrives get all removable drives : A:\, I:\.
Then I feed all these removable drive mountpoint to function
GetVolumeNameForVolumeMountPoint
but the volumeName returned from the function:
\\?\Volume{84ec96be-1682-11db-8e5c-001111c4d88f}
doesn't match with the device path.
So how can I determine which removable drive in the list is the one for the USB flash drive??? I need exact drive letter for the USB flash drive plugged into the PC in order to access files stored in it.
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Greetings,
Is it acceptable or good programming practice to have vectors nested inside each other within one big vector? For example, say I wanted to record inquiries for a business. Say there were only six type of inquiries and, of course, they can occur in one of 12 months, and each month has 30 or so days.
Is it ok to put an object call m_inqInquiry into a vector m_vDays into a vector m_vMonths, then put m_vMonths into a vector call m_vInquiries.
This proposed system would work as follows when a new inquire is created: The m_vInquiries would find the appropriate month vector based on the current month, then in the appropriate m_vMonths vector it would find the appropriate m_vDays vector, then in the particular day m_vDays vector it would add an m_inqInquiry object.
Is that consider bad practice? Is it ok to add more nested levels?
Thanks in advance,
BP
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BlitzPackage wrote: Is it acceptable or good programming practice to have vectors nested inside each other within one big vector?
in general, i don't see why not. sometimes that's simply what the solution requires.
your specific case sounds OK. though, most people would probably just shove all that data into a database and let SQL handle picking out the correct Inquiries.
Do the chickens have large talons?
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Thank you very much for your answer, I appreciate that. I would use SQL or SQLite, but there might be a substantial comment section which would contain the observations (i.e. at least several paragraphs). So my plan was to store it in a CString variable. I am not sure if SQL or SQL lite can do hold that much information in a field. What do you think?
Thanks again for your answer.
BP
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BlitzPackage wrote: I am not sure if SQL or SQL lite can do hold that much information in a field. What do you think?
It's only limited by disk space.
"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank
"Judge not by the eye but by the heart." - Native American Proverb
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yeah, SQL can handle it. a "varchar" can store just over 8000 chars. but the "text" data type can hold something like 2MB worth.
Do the chickens have large talons?
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Wow!!!! I did not know that, this has the potential to radically change the entire design of my software. I am soooo excited! I always thought that such databases could only handle about 250 characters or something in a text field. I guess I just deduced that from using MS Access. My last question: within the comment field, is it possible to store format variablse (i.e. paragraph indentation, a double carriage return for spacing, etc...)? If it's possible I'll find out how I just need to know if that's possible and the direction to look to.
Thanks again,
BP
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SQLServer (Access too) can hold anything a CString can: whitespace, CR/LF, etc..
Do the chickens have large talons?
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Can we use the alphablend API to create a transparent brush?
(The brush is createed from a bitmap pattern using CreatePatternBrush())
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I'm getting the handle of a MFC app with FindWindow and I can send messages to it's main window, but I would like to send a WM_COMMAND message with an ID that is currently disabled in the app.
The problem is that MFC catches such messages. Is it possible to either override the update handlers of an other app or force a WM_COMMAND message?
Thanks
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ABuenger wrote: he problem is that MFC catches such messages. Is it possible to either override the update handlers of an other app or force a WM_COMMAND message?
IMHO, This is little Difficult, you have hook that Window for the Message.. you can overide update functionality for that Control!
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You
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ABuenger wrote: he problem is that MFC catches such messages. Is it possible to either override the update handlers of an other app or force a WM_COMMAND message?
Sorry you cannot hook that Update Function.. as MFC itself post that message!
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You
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I've just finished the first pass on Lippman fourth edition. The best intro to C++ that I have read out of four or five books. I think that I actually am starting to understand this stuff. I'm currently reading Llopis "C++ for Game Programmers" that I picked up cheap and then I plan to re-read Lippman and do all the exercises next.
What book would you guys recommend for C++ and Game Programming after that?
My ideal book on C++ and Game Programming would include:
* not too much basic cpp stuff
* strong on game design preferably for FPS / strategy / RPG / RTS / Space Games (X2, X3 & Freelancer clones)
* strong on C++ not C (La Mothe is great but it's more C than C++)
* lots of code
* extended examples
* interfacing with engines: Q3, Crystal Space, whatever
Okay, that may be a tall order, but is there anything that even comes close? has some of the above?
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brett54321 wrote: * strong on C++ not C (La Mothe is great but it's more C than C++)
Effective C++ by Scott Meyers
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You might get more out of writing some code.
earl
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brett54321 wrote: strong on C++ not C (La Mothe is great but it's more C than C++)
'The C++ Programming language' by Bjarne Stroustrup. I'd frankly not trust any other book to teach C++ instead of C, especially when it comes to strings, etc.
You should be doing the exercises on the first pass, IMO.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
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'Lo again
thanks for the replies. I'm def. planning on doing all the exercises in Lippman next time round (in a couple of days) - I did do them for the first few chapters.
Meyers and Stroustrup are on my list of recommended books so I'll check them out in Waterstones.
I think for now that I'll finish Llopis, reread Lippman and do all the exercises, then take it from there. Prob. start writing some code 
cheers...
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brett54321 wrote: Read Lippman C++ Primer - what next?
Implement same !
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You
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What am I missing to show a BMP correclty using the CStatic variable assigned to a Picture Control through MFC...
BITMAP test;
CBitmap m_bitmap;
HBITMAP m_hbitmap;
m_bitmap.LoadBitmap(IDB_BITMAP1);
m_bitmap.GetBitmap(&test);
m_hbitmap = m_bitmap.operator HBITMAP();
m_S1S2_Arrow.MoveWindow(40,50,test.bmWidth,test.bmHeight,1);
m_S1S2_Arrow.SetBitmap(m_hbitmap);
m_S1S2.Arrow.ShowWindow(1);
I would presume that the BMP would be loaded in and shown at this point, but I get nothing back. Any ideas would be great. Thanks so much.
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Does this help?
"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank
"Judge not by the eye but by the heart." - Native American Proverb
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I am not trying to draw a button, I am simply trying to load a bitmap on a screen to show them things.
Instead of having 20 variables each with only 1 BMP that it shows, I want to be able to have 3 or 4 and have them be able to switch to different BMPs to load up. However, when I do that and call the ShowWindow(1) function, nothing happens.
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I'm (yes, finally) going to give GMail a try.
Can someone send me an invitation? 
Thanks
Warren
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toxcct wrote: (i say it explicitely so that you don't receive tons of invitations )
but from where you get his EMail address???
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You
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