what changes can i make??? - C / C++ / MFC Discussion Boards

Re: Crash when Clist is Destroyed in Vista

CPallini20-Oct-08 21:47

CPallini

20-Oct-08 21:47

I think the debugger is your best friend.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Re: Crash when Clist is Destroyed in Vista

Rajesh R Subramanian20-Oct-08 22:34

Rajesh R Subramanian

20-Oct-08 22:34

Why not try debugging? Why not show us the code so that we don't need to waste our telepathic powers on this?

It is a crappy thing, but it's life -^ Carlo Pallini

Re: Crash when Clist is Destroyed in Vista

KarstenK20-Oct-08 22:30

KarstenK

20-Oct-08 22:30

You havent wrote what is in the CList? OMG | :OMG:

Greetings from Germany

Re: Crash when Clist is Destroyed in Vista

Shaileshhex20-Oct-08 23:02

Shaileshhex

20-Oct-08 23:02

Clist is declared as
typedef CList<userdefinedtype> _lllist;

thanks
Smile | :)

Re: Crash when Clist is Destroyed in Vista

Shaileshhex20-Oct-08 23:04

Shaileshhex

20-Oct-08 23:04

Clist is declared as
typedef CList<userdefinedtype> _lllist;

Re: Crash when Clist is Destroyed in Vista

Shaileshhex20-Oct-08 23:07

Shaileshhex

20-Oct-08 23:07

Clist is declared as
typedef CList<userdefinedtype , &userdefinedtype> _lllist;

Re: Crash when Clist is Destroyed in Vista

KarstenK21-Oct-08 1:19

KarstenK

21-Oct-08 1:19

and what is the "userdefinedtype" in your case? Check the destructor of it. Unsure | :~

Greetings from Germany

what changes can i make???

Subrat Patnaik20-Oct-08 20:23

Subrat Patnaik

20-Oct-08 20:23

hi all,
i am placing here a piece of code which was a function used to retrieve the drive letter of a USB from the corresponding device ID.

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

BOOL GetSpecificDrive(LPTSTR lpDevID, TCHAR* DrvName)
{
DebugLog("entered GetSpecificDrive");

HDEVINFO hVolInfo;
GUID guid;
BYTE buffer[BUFFER_SIZE];
DWORD dwRequiredSize ;
TCHAR buf[BUFFER_SIZE],buf1[BUFFER_SIZE];
DEVINST devInstParent;
DWORD dwIndex;
TCHAR volume[BUFFER_SIZE];
int nLength;
DWORD size;
ULONG Status,Problem;

SP_DEVINFO_LIST_DETAIL_DATA devInfoListDetail;
SP_DEVICE_INTERFACE_DATA devInterfaceData;
SP_DEVINFO_DATA devInfoData,devInfo;
PSP_DEVICE_INTERFACE_DETAIL_DATA pDevDetail;
TCHAR TargetPath[BUFFER_SIZE]= {0};

if(!lpDevID)
{
DebugLog("!lpDevId");
return 0;
}

// GUID_DEVINTERFACE_VOLUME is interface Guid for Volume class devices.
guid = GUID_DEVINTERFACE_VOLUME;

// Get device Information handle for Volume interface
hVolInfo = SetupDiGetClassDevs(&guid, NULL, NULL,
DIGCF_DEVICEINTERFACE |
DIGCF_PRESENT);

if(hVolInfo == INVALID_HANDLE_VALUE)
{
DebugLog("hVolInfo == INVALID_HANDLE_VALUE");
return 0;
}

// Loop until device interfaces are found.
for(dwIndex = 0; ;dwIndex ++)
{
ZeroMemory(&devInterfaceData, sizeof(devInterfaceData));
devInterfaceData.cbSize = sizeof(devInterfaceData);

// Get device Interface data.

char errorCondition[100] = {0};
if(!SetupDiEnumDeviceInterfaces(hVolInfo, NULL, &guid,dwIndex,&devInterfaceData))
{
sprintf(errorCondition,"error code returned : %d ",GetLastError());
DebugLog("!SetupDiEnumDeviceInterfaces");
DebugLog(errorCondition);
break;
}

ZeroMemory(&devInfoData, sizeof(devInfoData));
devInfoData.cbSize = sizeof(devInfoData);

pDevDetail = (PSP_DEVICE_INTERFACE_DETAIL_DATA)buffer;
pDevDetail->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);

// Get device interface detail data to get
// Device Instance from SP_DEVINFO_DATA and
// Device Path from SP_DEVICE_INTERFACE_DETAIL_DATA

if(!SetupDiGetDeviceInterfaceDetail(hVolInfo,
&devInterfaceData,
pDevDetail, // SP_DEVICE_INTERFACE_DETAIL_DATA
BUFFER_SIZE,
&dwRequiredSize,
&devInfoData)) // SP_DEVINFO_DATA
{
char errcndn[100] = {0};
sprintf(errcndn,"error code returned : %d",GetLastError());
DebugLog(errcndn);
DebugLog("!SetupDiGetDeviceInterfaceDetail");
break;
}

// Get the device instance of parent. This points to USBSTOR.
DebugLog("CM_Get_Parent call");
if(CM_Get_Parent(&devInstParent,devInfo.DevInst, 0) != CR_SUCCESS)
{
DebugLog("CM_Get_Parent failed");
}

// Get the device instance of grand parent. This points to USB root.
DebugLog("CM_Get_Parent 2 call");
if(CM_Get_Parent(&devInstParent,devInstParent, 0) != CR_SUCCESS)
{
DebugLog("CM_Get_Parent 2 failed");
}
// Get the device ID of the USB root.
DebugLog("CM_Get_Device_ID call");
if(CM_Get_Device_ID(devInstParent, buf,BUFFER_SIZE,0) != CR_SUCCESS)
{
DebugLog("Cm_Get_Device_ID failed");
}

DebugLog("Buf value grandparent :::::::::::::::::");
DebugLog(buf);

DebugLog(lpDevID);

if( buf1 != NULL && _tcscmp(lpDevID,buf1) == 0)
{
// Append \ to the DevicePath of SP_DEVICE_INTERFACE_DETAIL_DATA
nLength = (int)strlen(pDevDetail->DevicePath);
pDevDetail->DevicePath[nLength] = '\\';
pDevDetail->DevicePath[nLength+1] = 0;

char dev[260] = {0};
sprintf(dev,"%s",pDevDetail->DevicePath);
DebugLog(pDevDetail->DevicePath);
DebugLog(dev);

// Get Volume mount point for the device path.
char errorReport[50] = {0};
if(GetVolumeNameForVolumeMountPoint(pDevDetail->DevicePath,volume,BUFFER_SIZE))
{
if(GetVolumePathNamesForVolumeName(volume,TargetPath,BUFFER_SIZE,&size))
{
_stprintf(DrvName,"%s", TargetPath);
DebugLog(DrvName);
DebugLog("entered GetSpecificDrive 1");
return 1;
}
else
{
DebugLog("Error");
DebugLog("exiting GetSpecificDrive 0");
return 0;
}
}
else
{
sprintf(errorReport,"Error Code returned is %d",GetLastError());
DebugLog("!GetVolumeNameForVolumeMountPoint");
DebugLog(errorReport);
}
}
}

SetupDiDestroyDeviceInfoList(hVolInfo);
DebugLog("exiting GetSpecificDrive");
return 0;

}

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

this code is works fine when it is used in development for win-xp.
windows vista has got some other thigs to go. this code doesnt work.. the functions cm_get_parent encounters an error in retrieving the grandparent device id . as i looked upon i found that in vista there is no parent child concept and in vista USB devices are no longer handled as removable device instead they are handled as fixed drives.

i am stuck up here in this part of my code as without getting the drive letter, i cant proceed further.
what changes can i make or is there any other code which can replace the above code for getting the same functionality/??????????????????

Re: what changes can i make???

SandipG 20-Oct-08 21:08

SandipG

20-Oct-08 21:08

- Please do not shout(i.e. do not use bold and bigger fonts.)
- Please format your code using code block button at the bottom

Regards,
Sandip.

Button image

cpvc++20-Oct-08 19:49

cpvc++

20-Oct-08 19:49

Hi All

How can i set image on button?Plz help me

Re: Button image

SandipG 20-Oct-08 20:57

SandipG

20-Oct-08 20:57

Hi,
Here is good tutorial for using bitmap button
Bitmap Button[^]

Also don't forget to look at Button Controls[^] section of CP.

I hope it helps.

Regards,
Sandip.

Re: Button image

CPallini20-Oct-08 20:59

CPallini

20-Oct-08 20:59

MFC library provides the CBitmapButton[^].
Smile | :)

Converting AVI data into bitmap data

Vaclav_20-Oct-08 16:54

Vaclav_

20-Oct-08 16:54

I am using CopyMemory to transfer AVI video data into bitmap.
My problem is that AVI data is in RGB 24 bit format and my bitmap is 32 bit - RGB plus reserved 8 bits word.
The bitmap displays OK in MFC view however I like to “insert” the reserved word into the bitmap data to make it real.
Any constructive suggestion is welcome.
Thanks for reading.
Vaclav

Re: Converting AVI data into bitmap data

Mark Salsbery21-Oct-08 5:29

Mark Salsbery

21-Oct-08 5:29

If the source and destination formats don't match then you
can't use CopyMemory().

Loop through the data and copy it correctly!

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Please help with this Linker Error

BobInNJ20-Oct-08 16:21

BobInNJ

20-Oct-08 16:21

I am getting the following error message when I link my MFC application:

1>uafxcwd.lib(afxmem.obj) : error LNK2005: "void __cdecl operator delete(void *)" (??3@YAXPAX@Z) already defined in LIBCMTD.lib(dbgdel.obj)
1>C:\c++.dev\rCalc\Debug\rCalc.exe : fatal error LNK1169: one or more multiply defined symbols found

None of the classes that I define, define an operators. Therefore, I do not understand why I am getting this message. I am hoping that somebody can tell me what I am missing.

Thanks
Bob

Re: Please help with this Linker Error

Saurabh.Garg20-Oct-08 19:27

Saurabh.Garg

20-Oct-08 19:27

This is because you are using different type of CRT (C Run Time libraries). Make sure all the projects in the solution using same CRT.

-Saurabh

Re: Please help with this Linker Error

BobInNJ21-Oct-08 5:32

BobInNJ

21-Oct-08 5:32

After doing some more internet searches, I found that this was a known issue with the Visual C++. However, there is an easy work around. You must make sure that afxwin.h is the first header file included in every file in your program. After modifying my code so that afxwin.h was the first header file included in every module. My problem went away.

Bob

need your help on C++ Keypress

wcgan20-Oct-08 16:19

wcgan

20-Oct-08 16:19

Hi all,

I am newbie in C++, i have a project to check the stuck key of keyboard using VC++ MFC Dialog. Only one key can be press at same time.

example:

I pressed and hold 'a' and then press 'b'. It should prompt out an error message regarding there was more than 1 key pressed.

Below is my coding, i only able to detect a key pressed. If the 'a' key haven't release, 'b' key pressed, it will go in the sub-program and display 'b' key pressed.

What pragrameter i should using in MFC library to check there is more than 1 key pressed?

Thanks.

[code]

BOOL Test_0Dlg::PreTranslateMessage(MSG* pMsg)

{

// TODO: Add your specialized code here and/or call the base class

MSG* msg=(MSG*)pMsg;

if(pMsg->message==WM_KEYDOWN)

{

// sub-program

}

return 0;

}

[/code]

Re: need your help on C++ Keypress

CPallini20-Oct-08 21:12

CPallini

20-Oct-08 21:12

See GetAsyncKeyState's documentation [^] (for code samples [^]).
Smile | :)

help with C++ program to decrypt something from ASCII

Pissedoffmathematician20-Oct-08 13:16

Pissedoffmathematician

20-Oct-08 13:16

I need help writing a program for decryption from ASCII. I hate programming and am a mathematics student, they required me take this class and I find it very annoying and I dont have time to spend figuring out something that I dont understand. Please will someone help me with this because if not I cannot drop the class because I will loose my scholarship and other than getting some help I will fail this class because it makes no sense to me. Thank you Mad | :mad: