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Re: IOCTL_STORAGE_GET_DEVICE_NUMBER fail to get disk number

vasu_sri4-Feb-10 22:36

vasu_sri

4-Feb-10 22:36

u can try with this IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS structure.
it gives pratition number.

like this,
VOLUME_DISK_EXTENTS pdg;
....
DeviceIoControl(...,IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS,...);
....
pdg.Extents->DiskNumber;

thats it.

Regards,
Srinivas

Re: IOCTL_STORAGE_GET_DEVICE_NUMBER fail to get disk number

MKC0024-Feb-10 23:21

MKC002

4-Feb-10 23:21

Thanks
After using that i get correct disk number. But i found starting offset and extent length different.It shows very large value for starting offset.And extent length shows a value(0x7e00) which is the position in disk from where this partition start.
Does extentlength means total size of drive or position of drive in disk?

typedef struct _DISK_EXTENT {
DWORD DiskNumber;
LARGE_INTEGER StartingOffset;
LARGE_INTEGER ExtentLength;
} DISK_EXTENT, *PDISK_EXTENT;
typedef struct _VOLUME_DISK_EXTENTS {
DWORD NumberOfDiskExtents;
DISK_EXTENT Extents[1];
} VOLUME_DISK_EXTENTS, *PVOLUME_DISK_EXTENTS;

Re: IOCTL_STORAGE_GET_DEVICE_NUMBER fail to get disk number

vasu_sri4-Feb-10 23:40

vasu_sri

4-Feb-10 23:40

u can get size of disk like this,
ULONGLONG ulLength = pdg.Extents->ExtentLength.QuadPart;

Regards,
Srinivas

Re: IOCTL_STORAGE_GET_DEVICE_NUMBER fail to get disk number

Adam Roderick J5-Feb-10 0:10

Adam Roderick J

5-Feb-10 0:10

I have two doubts regarding ur question
1. If DeviceIoControl API is failing, can you check error with GetLastError API([^]).
2. What type of dynamic device you are using and hope it comes in one of the define type([^])

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picture control is hidden by static box

learningvisualc4-Feb-10 21:48

learningvisualc

4-Feb-10 21:48

Hi all,

I have made a simple Dialog box application, in that i have made a static text control with Client Edge properties true and i also have a picture control which has a bitmap. That picture control is below that static control to give a look that bitmap inside that static control border. but the problem is sometimes that bitmap is not displayed i have also used Invalidate(False) everytime i have displayed both the controls but sometimes only static box is displayed and picture is not displayed...

How can i show it..

thanks in advance

Re: picture control is hidden by static box

KingsGambit4-Feb-10 22:14

KingsGambit

4-Feb-10 22:14

May be you have to properly set the tab order. You can press Ctrl + D on resource view of dialog and see/modify tab order.

Re: picture control is hidden by static box

learningvisualc4-Feb-10 22:26

learningvisualc

4-Feb-10 22:26

Static control tab should be first or picture control tab

Re: picture control is hidden by static box

KingsGambit4-Feb-10 22:38

KingsGambit

4-Feb-10 22:38

I think static control should come before the picture box in tab order. I mean if static control's tab order is 1 then picture control's has to be 2.

Re: picture control is hidden by static box

learningvisualc4-Feb-10 22:53

learningvisualc

4-Feb-10 22:53

still not visible sometimes....

Re: picture control is hidden by static box

Moak4-Feb-10 23:15

Moak

4-Feb-10 23:15

Have a look at this: Overlapping Controls Are Not Supported by Windows[^] (means siblings). If you want overlapping controls in a dialog use a child-parent-hierarchy, for example use SetParent()[^]. Another alternative would be modifying the static text control you mentioned, make it a custom control that draws a picture in the background.

Hope this helps.

Webchat in Europe Java | [Coffee]

(only 4K)

Re: picture control is hidden by static box

KingsGambit4-Feb-10 23:21

KingsGambit

4-Feb-10 23:21

How do you hide the picture box? Are you using ShowWindow() for that?

Re: picture control is hidden by static box

KingsGambit4-Feb-10 23:34

KingsGambit

4-Feb-10 23:34

In addition to what Moak mentioned, another thing I would suggest (as an easy workaround) is to remove the static control and enable Client Edge style for picture box.

FAST Embedded Model Approach

debrah.h484-Feb-10 19:45

debrah.h48

4-Feb-10 19:45

When I first heard about Embedded360 and their Fast Embedded Model, I didn’t give much importance to it. But it’s when I worked with them and got to know their work process that I truly understood their approach. Their Agile methodologies combined with technical expertise in the embedded space have helped them in developing flexible, easily accessible, and futuristic solutions that enhance quality and maximize profits. For more details click here: http://www.embedded360.com/[^]

Voted to remove

Rajesh R Subramanian4-Feb-10 21:41

Rajesh R Subramanian

4-Feb-10 21:41

...

If you're advertising something, pay for it and do it the right way.

“Follow your bliss.” – Joseph Campbell

how do i call c++ dll function from another c ++ dll

jadhavjitendrar4-Feb-10 19:05

jadhavjitendrar

4-Feb-10 19:05

i m creating win32 dll in vc++(mfc) application.i have to call dll function from another dll.
But i dont no the way,how to calling dll function from another dll.
Please help me.
Thanks in advance.

Re: how do i call c++ dll function from another c ++ dll

Rajesh R Subramanian4-Feb-10 19:14

Rajesh R Subramanian

4-Feb-10 19:14

You could use the .lib file and header (the easier way).

Or you could use LoadLibrary()[^] and GetProcAddress()[^]

There are many beginner level tutorials on DLLs at CP. Just search for those and give some of them a read.

“Follow your bliss.” – Joseph Campbell

Re: how do i call c++ dll function from another c ++ dll [modified]

Adam Roderick J4-Feb-10 21:17

Adam Roderick J

4-Feb-10 21:17

For that purpose, you can either rely on static linking or dynamic linking.

1. Static Linking
a. Add the lib corresponding to the DLL(DLL that is to be called) in Project Settings->Link->Input->Object/library modules.
b. Add the Include file pf the DLL into your project dsp.
c. Call the function after including the header.
2. Dynamic linking- Usually done in case, where you have Def([^]) files, which is mentioned in the above comment by rajesh.

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modified on Friday, February 5, 2010 6:11 AM

Re: how do i call c++ dll function from another c ++ dll

fat_boy5-Feb-10 1:08

fat_boy

5-Feb-10 1:08

Pay attention to Rajeshs post, LoadLibrary Getprocaddress are great functions to learn to use.

You get a smaller loaded image by using dynamic linking dont forget!

Morality is indistinguishable from social proscription

Re: how do i call c++ dll function from another c ++ dll

Rajesh R Subramanian5-Feb-10 6:51

Rajesh R Subramanian

5-Feb-10 6:51

Dude, you've picked on a univoter. Smile | :)

“Follow your bliss.” – Joseph Campbell

How to Disable a node in CtreeCtrl

rahul.kulshreshtha4-Feb-10 18:53

rahul.kulshreshtha

4-Feb-10 18:53

I have a tree with some nodes with CheckBox enable
I want to disable few of them because they are compulsory to choose so I want few nodes will be selected and disable so user can not change it.

I searched on net and found method CTreeCtrl::setItemState(...) but it does not have option for disabling a node in xp. Below extended method can do this but it is available in VISTA and later.

http://msdn.microsoft.com/en-us/library/bb385266.aspx

m_treeCtrl.SetItemStateEx( hPA, TVIS_EX_DISABLED );

Please suggest some way..

Need help for Server-Client Application.

Le@rner4-Feb-10 18:25

Le@rner

4-Feb-10 18:25

Hi all,

I m working on Server - Client type application,using SOCKET to communicate between Server and Client.

I m using RegConnectRegistry to access client registry,but some times this function fails.

please help me for this.

i think its a client server connectivity issue because of security hierarchy.

it happens when server is 2003 and client is VISTA with uac enabled.
or Server is 2008 and client is XP.

please help me.

and please tell me how can use user name and password from server side to access the client.

provide me any help or guidance for this.

thanks in advance.

To accomplish great things, we must not only act, but also dream;
not only plan, but also believe.

Re: Need help for Server-Client Application.

Le@rner8-Feb-10 1:08

Le@rner

8-Feb-10 1:08

When server is Windows server 2008 and clinet machine is Windows xp Professional with service pack 3.

in network window when i want to access this client machine its popup a username and password window to access.

in my code if i use RegConnectRegistry without entering username password in network window for xp client,this return a error of Access Denied.

if i use RegConnectRegistry after entering username password in network window for xp client,
than its execute,no error return but after the i want to open the registry by RegOpenKey.

now this return error access denied.

please help me what can i do.

thanks.

To accomplish great things, we must not only act, but also dream;
not only plan, but also believe.

Oracle select * from table name

MsmVc4-Feb-10 18:01

MsmVc

4-Feb-10 18:01

Hi All

I am try to get data from oracle.I am facing some problem to get data from oracle table when oracle table data type is RAW.For example i have a table in oracle

create table Test(Item RAW(255));
insert into Test values('1');
insert into Test values('2');

Now i am fetching data from Test table.

CString tabledata=Select * from "system"."Test";
pRecordset=m_pConn->Execute(_bstr_t(tabledata), 0, adCmdText);
_variant_t fetchdata;
fetchdata= pRecordset->GetRows(adGetRowsRest);
LONG lend = fetchdata.parray->rgsabound->cElements;
COleVariant varField;	
	    for (int i = 0; i < lend; i++)
		{
			int k=0;
  	   for (int j = 0; j < nCount; j++)
	   {
  	   
  	      long index[2] = {j,i};
              SafeArrayGetElement(fetchdata.parray,index,&varField);
           }
           }

out put is

varField = {???}
when i click on varFiled then show like this
tagVARIANT = safearray of UI1 = [1](1 '')

But original values is "1".
So how can i get original values.
Please help me

Dialog is getting close automatically

chevu4-Feb-10 16:46

chevu

4-Feb-10 16:46

Hi,
We have SDI application. In which we are opening some dialogs. Once application is up these dialogs can be open and close as many times as possible. If I am opening dialog first time, minimize application(not dialog, i mean whole application) and then maximize application, dialog is also displayed in previous condition. But if i close and open dialog again, on minimize and maximize application make dialog disappear, I have to open dialog explicitly. How can I stop this behavior?

I tried to explain situation as much as possible. If anyone have doubt fire your question.

Thanks.

Re: Dialog is getting close automatically

Avi Berger4-Feb-10 17:28

Avi Berger

4-Feb-10 17:28

I don't know. Two questions do immediately come to my mind, so I will share them in case they lead you somewhere.

Are you consistently setting the parent window everywhere you are creating/recreating the dialogs?

(Presuming you are using MFC) How are you managing the lifetime of CDialog derived object associated with the dialog?

I hope these might lead you somewhere, but I don't know if they will.

Last Visit: 31-Dec-99 18:00 Last Update: 3-Jun-24 11:28

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