C / C++ / MFC

26-Feb-06 23:50

You can do this with MFC, see MSDN for CYourStandardKindOfView printing support. Basically, it's about overriding several virtual functions in your view implementation.

Re: Printing

Subramaniam s.V.27-Feb-06 0:17

Subramaniam s.V.

27-Feb-06 0:17

Hi,

Sorry Frown | :(

Can you be more specific in the class name or some thing. The one that you have mentioned "CYourStandardKindOfView" is it a MFC class? I dont find any with this name.

Sorry for the trouble.

Thanks

Re: Printing

Dennis Gourjii27-Feb-06 0:35

27-Feb-06 0:35

See:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vcmfc98/html/_mfc_cview_class_members.asp[^]

See OnPreparePrinting, OnEndPrinting, OnPrint etc. All that applies to CView is of course inherited by other view classes.

Counting number of files

theprinc26-Feb-06 22:42

theprinc

26-Feb-06 22:42

Does anybody know how to count all the files on a windows environment.
Currently i have a recursive method that goes through all the folders counting the number of files. It takes too long

Any faster method would be appreciated
Thank You

Fate pays tax to know man

Nibu babu thomas26-Feb-06 22:45

26-Feb-06 22:45

theprinc wrote:
Currently i have a recursive method that goes through all the folders counting the number of files.

AFAIK this is the only way.

Nibu thomas
Software Developer

Dennis Gourjii26-Feb-06 23:55

26-Feb-06 23:55

Something makes me think there is no faster way. I mean if there was one why would it take Explorer so long to count the number of files when you invoke Properties command for a particularly huge directory?
Try optimizing your recursive function instead. After all, it gets called over and over again and if by chance it contains unoptimized code... well, it'll slow down for a reason.

ThatsAlok26-Feb-06 23:56

ThatsAlok

26-Feb-06 23:56

I Second NIBU!

"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

Detecting change printer change settings

David Crow27-Feb-06 2:49

David Crow

27-Feb-06 2:49

theprinc wrote:
Currently i have a recursive method that goes through all the folders counting the number of files. It takes too long

Any faster method would be appreciated

Show us the function and maybe we can make suggestions.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

loneadam200026-Feb-06 21:44

loneadam2000

26-Feb-06 21:44

Hi there,

I wish to know when printer settings are changed and which printer (in a users session), in a server environment (win2k3), I know about WM_SETTINGSCHANGE but lparam seems to get only "devices" and not the printer name.

What I can do is enumarate all printers and keep track of their DEVMODE and each time the notification WM_SETTINGSCHANGE happens i will enumrate AGAIN all printers and compare with the previous list of devmodes to check if a setting has chhanged. As you can see this is very inefficient.

In your opinion are there other ways to this, at least detect from which user this change has happened, so to check only his/her printers.

Thanks
Adam

Why gethostbyname(hostname) returns NULL ?

fearless stallion26-Feb-06 20:59

fearless stallion

26-Feb-06 20:59

I made a program that used the gethostbyname(hostname); function in MFC. it worked fine. now when i tried to do the same in a win32 project it is returning null. before this i added the header file "winsock2.h". which showed some errors as redefinition of this xxxxxxx . then i removed it and added the ws2_32.lib reference, after which, it showed no errors but at gethostbyname(hostname); function it returns NULL. have i done anything wrong ? the hostname string contains a genuine hostname. Please answer this

Kss

Re: Why gethostbyname(hostname) returns NULL ?

Nibu babu thomas26-Feb-06 21:03

Re: Why gethostbyname(hostname) returns NULL ?

26-Feb-06 21:03

Try to find the error that occurred using WSAGetLastError.

Go through this[^] to find out what happened.

Nibu thomas
Software Developer

fearless stallion26-Feb-06 21:22

fearless stallion

26-Feb-06 21:22

Thank you, it helped me ,it was a silly error i didnot call WSAStartup() :->
thanks again

kss

setting focus in list-view controls

Waldermort26-Feb-06 20:34

26-Feb-06 20:34

Imediatly after filling a listview with all my data I wish to set the first item as selected.

I use the folowwing:

ListView_SetItemState(GetDlgItem(hwnd,ID_DATA_LIST),0,LVIS_SELECTED,LVIS_SELECTED);
ListView_SetItemState(GetDlgItem(hwnd,ID_DATA_LIST),0,LVIS_FOCUSED ,LVIS_FOCUSED);

This is setting the list item as selected, but it does not give it the focus. i.e. Selected items usualy are highlighted in blue, but mine are simply highlighted in grey until the item is clicked.

Is there something I am missing?

Naveen26-Feb-06 20:54

Naveen

26-Feb-06 20:54

You should have to call the SetFocus function of the list view control.

nave

Waldermort26-Feb-06 23:48

26-Feb-06 23:48

I understand that I need to use the SetFocus function, but where exactly should it be called?

WM_SETFOCUS // doesn't work
WM_INITIALIZE // doesn't work

When text is being updated within contols via WM_SETTEXT, would that cause a loss of focus? I thought these sort of procedures would pass the focus back if set at all.

Naveen27-Feb-06 0:00

Naveen

27-Feb-06 0:00

u should have to set focus to the list control before you set an items selection state.

SetFoucs(GetDlgItem(hwnd,ID_DATA_LIST));
ListView_SetItemState(GetDlgItem(hwnd,ID_DATA_LIST),0,LVIS_SELECTED,LVIS_SELECTED);

nave

Dennis Gourjii27-Feb-06 0:01

27-Feb-06 0:01

a) There is a style flag for listview that forces it to show selection in blue even when the control is out of focus
b) I guess you can call SetFocus(hwndOfYourListView) in WM_CREATE handler

WM_SETTEXT causes no loss of focus I believe.

Nibu babu thomas27-Feb-06 0:11

27-Feb-06 0:11

waldermort wrote:
I understand that I need to use the SetFocus function, but where exactly should it be called?

If it's a dialog then OnInitDialog
If it's a view then OnInitialUpdate

Nibu thomas
Software Developer

Waldermort27-Feb-06 0:58

27-Feb-06 0:58

according to MSDN:
LVS_SHOWSELALWAYS
The selection, if any, is always shown, even if the control does not have the focus.

This is true but it isn't highlighted in blue. Nomatter where I place the SetFocus call, nothing is happening. I have tried before setting item state, after setting state, beginning and end of WM_INITDIALOG, WM_CREATE, WM_SETFOCUS, WM_IMNOTGIVINGYOUFOCUSHAHAHA. Infact the only place it is working is within WM_PAINT, but this is just wrong.

This control is on a dialog along with sevral other controls. The only other thing I can think of is to change the tab order, but still, SetFocus should be unrelated to the tabs.

Nibu babu thomas27-Feb-06 1:36

27-Feb-06 1:36

Is this a dialog? If so then you must return FALSE from OnInitDialog if you are explicitly setting focus or else focus will be set to first control in the dialog.

Nibu thomas
Software Developer

Waldermort27-Feb-06 1:56

27-Feb-06 1:56

Nibu, You're the best Big Grin | :-D

David Crow27-Feb-06 2:52

David Crow

27-Feb-06 2:52

Try:

ListView_SetItemState(GetDlgItem(hwnd, ID_DATA_LIST), 0, LVIS_FOCUSED|LVIS_SELECTED, LVIS_FOCUSED|LVIS_SELECTED);

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Waldermort27-Feb-06 3:16