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Thanks man, that sucked! I went the Load Menu route, although the instructions you gave me worked as well. I had to create a menu called ID_INITIAL_MENU. Then in the properites section, I had to check popup. Then create ID's and captions for each new popup I wanted in the menu. Once the menu was associated with a class I was able to add message maps that allow me to do something when the pop up menu's were selected. I think those were the steps I really needed. Thanks for putting up with me though...;P
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How do i read JPEG ,GIF files to get the following info ...
1.Image Width
2.Image Height
3.Monochromw or color
4.Frame Rate ( for Gif)
Can some one give the code along with the Header structure of JPEG,GIFF
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Take a look at CXImage - http://www.codeproject.com/bitmap/cximage.asp
Dave
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Hi,
In a dialog-based application, i have a a worker
thread which read 256k data from Cdrom at one times (step).
But it failed with memory leak. Would you please
provide me a safe thread method to be used for my problem?
I see many example code of the "thread", but i don't know
which one is best for my problem.
Thanks in advance!
chen
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If you're using AfxBeginThread then it's possible to have the returned CWinThread* as memory leak.
rechi
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Thanks!
but how to solve this problem (i really used AfxBeginThread function)
and there is 256K data needed read from CD and save it to a file for
each iteration step.
chen
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chen wrote:
there is 256K data needed read from CD and save it to a file
I don't know if this is the problem, it might work fine.
Save the CWinThread* returned by AfxBeginThread and delete it after the thread terminates.
rechi
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The following is the part of the code, would you please try to
find where is my mistake?
class CEfmraDlg : public CResizableDialog
{
public:
CEfmraDlg(CWnd* pParent = NULL);
struct SToto
{
BOOL m_bToto;
};
static UINT StartThreadEfmRead (LPVOID param);
...........
bool m_bStop;
}
void CEfmraDlg::OnEfmRead()
{
m_bStop = FALSE;
SToto stToto;
stToto.m_bToto = TRUE;
AfxBeginThread(CEfmraDlg::StartThreadEfmRead, this);
}
UINT CEfmraDlg::StartThreadEfmRead (LPVOID param)
{
char buff1[100];
CEfmraDlg* ts = (CEfmraDlg*)param;
if(ts->m_scsi.EFM_open(newSparam) == 0)
{
FILE *fp;
if( NULL == (fp = fopen("cd.txt", "wb"))){
ts->m_ListBox.AddString("Open cd.txt error");
}
ts->m_ListBox.AddString("Read CD begin ...");
int count = 0;
for(; 
{
count++; //256k
if(ts->m_bStop)
{
ts->m_ListBox.AddString("Read EFM data aborted.");
ExitThread(0);
break;
}
if(ts->m_scsi.EFM_read(fp))
{
ts->m_ListBox.AddString("Read Error!");
ExitThread(0);
break;
}
memset(buff1, 0, 100);
sprintf(buff1,"CD Reading - Count: %d Bytes: %d", count, count*256*1024);
ts->m_diff = buff1;
ts->ShowText();
}
ts->m_scsi.EFM_close();
fclose(fp);
AfxEndThread (0);
return 0;
}
return 1;
}
chen
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Replace ExitThread(0) with AfxEndThread(0). Don't mix up these calls when you're using MFC.
When you're exiting the thread because of some read error or abort you have to call fclose(fp)  . This could be your memory leak, with the greatest probability.
Use CWinThread *pThread = AfxBeginThread(CEfmraDlg::StartThreadEfmRead, this). If your program ends before the thread exits, then you must delete pThread.
rechi
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I have tried using AfxEndThread(0), the result is same. In addition, when quit/abort from the thread the fclose(fp) really
called at the end of the UINT CEfmraDlg::StartThreadEfmRead (LPVOID param).
I will try to remove the
struct SToto
{
BOOL m_bToto;
};
and using CWinThread *pThread = AfxBeginThread(CEfmraDlg::StartThreadEfmRead, this).
and delete the pThread try again.
chen
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When i using using CWinThread *pThread = AfxBeginThread(CEfmraDlg::StartThreadEfmRead, this).
How to delete the pThread and transfer the varibles?
chen
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chen wrote:
In addition, when quit/abort from the thread the fclose(fp) really
called at the end of the UINT CEfmraDlg::StartThreadEfmRead (LPVOID param)
Be careful, when you call AfxEndThread(0), the thread is killed on the spot! The call you are talking about will not be executed; put fclose(fp) before any AfxEndThread(0) call.
chen wrote:
How to delete the pThread and transfer the varibles?
You don't have to transfer any variable, judging by what i saw in your code. To delete pThread, try this:
try {
if (pThread->ExitInstance())
delete pThread;
}
catch(...)
{
TRACE("never mind\n");
}
Not the best option but it's easy to write 
rechi
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Would you like re-write above code onece again by using your
method?
chen
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Let's do it:
class CEfmraDlg : public CResizableDialog
{
CWinThread *pThread;
public:
CEfmraDlg(CWnd* pParent = NULL);
virtual ~CEfmraDlg()
{
try
{
if (pThread)
if (pThread->ExitInstance())
delete pThread;
}
catch(...)
{
TRACE("never mind\n");
}
}
struct SToto
{
BOOL m_bToto;
};
static UINT StartThreadEfmRead (LPVOID param);
bool m_bStop;
}
void CEfmraDlg::OnEfmRead()
{
m_bStop = FALSE;
SToto stToto;
stToto.m_bToto = TRUE;
pThread = AfxBeginThread(CEfmraDlg::StartThreadEfmRead, this);
}
UINT CEfmraDlg::StartThreadEfmRead (LPVOID param)
{
char buff1[100];
CEfmraDlg* ts = (CEfmraDlg*)param;
if(ts->m_scsi.EFM_open(newSparam) == 0)
{
FILE *fp;
if( NULL == (fp = fopen("cd.txt", "wb")))
{
ts->m_ListBox.AddString("Open cd.txt error");
}
ts->m_ListBox.AddString("Read CD begin ...");
int count = 0;
for(; count<=256*1024; )
{
count++;
if(ts->m_bStop)
{
ts->m_ListBox.AddString("Read EFM data aborted.");
fclose(fp);
AfxEndThread(0);
}
if(ts->m_scsi.EFM_read(fp))
{
ts->m_ListBox.AddString("Read Error!");
fclose(fp);
AfxEndThread(0);
}
memset(buff1, 0, 100);
sprintf(buff1,"CD Reading - Count: %d Bytes: %d", count, count*256*1024);
ts->m_diff = buff1;
ts->ShowText();
}
ts->m_scsi.EFM_close();
fclose(fp);
AfxEndThread (0);
}
return 1;
}
rechi
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could any one give me or tell me where I can download c library for soket.h and other internet library? thanks;P
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Does anyone know of a way to detect if a volume is set up as a Dynamic Drive ? I know that the System ID field of the partition table will be set to 0x42 but cannot determine a way to access this information using the SDK.
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Just a guess: Open drive, read sector 1, cylinder 0.....
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Nope.
I found it late yesterday. In the hardware SDK using DeviceIoControl(), however at the moment I am getting access errors, but I am sure I will get around those. Thanks for your help.
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hDevice = CreateFile(disks[DriveNum].name, /* Open the argument drive */
GENERIC_READ|GENERIC_WRITE, /* Read-only access required */
FILE_SHARE_READ|FILE_SHARE_WRITE, /* Shared read access */
NULL, /* Default security attributes */
OPEN_EXISTING, /* Disposition */
0, /* File attributes */
NULL); /* Don't copy any file's attributes */
if (hDevice == INVALID_HANDLE_VALUE)
memset(&scip, 0, sizeof(scip));
memset(IdOutCmd, 0, sizeof(IdOutCmd));
scip.cBufferSize = IDENTIFY_BUFFER_SIZE;
scip.irDriveRegs.bFeaturesReg = 0;
scip.irDriveRegs.bSectorCountReg = 1;
scip.irDriveRegs.bSectorNumberReg = 1;
scip.irDriveRegs.bCylLowReg = 0;
scip.irDriveRegs.bCylHighReg = 0;
//
// Compute the drive number.
//
scip.irDriveRegs.bDriveHeadReg = 0xA0;
//
// The command can either be IDE identify or ATAPI identify.
//
scip.irDriveRegs.bCommandReg =
(VersionParams.bIDEDeviceMap & 0x10) ? \
IDE_ATAPI_ID : IDE_ID_FUNCTION;
if( IDE_ATAPI_ID == scip.irDriveRegs.bCommandReg) {
LogMessage1("%s : ATAPI device",disks[DriveNum].name);
}
scip.bDriveNumber = 0;
scip.cBufferSize = IDENTIFY_BUFFER_SIZE;
if ( DeviceIoControl(hDevice, DFP_RECEIVE_DRIVE_DATA,
(LPVOID)&scip, sizeof(SENDCMDINPARAMS) - 1,
(LPVOID)&IdOutCmd, sizeof(SENDCMDOUTPARAMS) + IDENTIFY_BUFFER_SIZE - 1,
&cbBytesReturned, NULL) )
{
IDSECTOR *pids=(IDSECTOR *)((SENDCMDOUTPARAMS *)IdOutCmd)->bBuffer;
ChangeByteOrder(pids->sModelNumber, sizeof pids->sModelNumber);
memset(disks[DriveNum].model,0,sizeof(disks[DriveNum].model));
strncpy(disks[DriveNum].model,pids->sModelNumber,sizeof pids->sModelNumber);
/* Strip trailing whitespace from model number */
for(j=strlen(disks[DriveNum].model) ; (j>0) && isspace(disks[DriveNum].model[j-1]) ; j--);
disks[DriveNum].model[j]=0;
DriveSize=pids->ulTotalAddressableSectors;
}
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where device
_snprintf(disks[DriveNum].name,sizeof(disks[DriveNum].name),"\\\\.\\PhysicalDrive%d",DriveNum);
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It was the second parameter to CreateFile() that was giving the access problems, I have got it now, its easier to do this:
<snippet>
PARTITION_INFORMATION pti;
hDevice = CreateFile("\\\\.\\c:",
GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
0,
NULL);
bResult = DeviceIoControl(hDevice,
IOCTL_DISK_GET_PARTITION_INFO,
NULL, 0,
pti, sizeof(*pti),
&junk,
(LPOVERLAPPED) NULL);
if (bResult)
{
switch(pdi.PartitionType)
{
case PARTITION_LDM:
AfxMessageBox("Dynamic Drive Detected");
break;
case PARTITION_EXTENDED:
AfxMessageBox("Extended Partition Detected");
break;
case PARTITION_FAT32:
AfxMessageBox("FAT32 partiton Detected");
break;
case PARTITION_FAT_16:
AfxMessageBox("FAT16 partition Detected");
break;
default:
AfxMessageBox("None detected");
}
}
Just a note though. The doco says that PARTITION_INFORMATION and IOCTL_DISK_GET_PARTITION_INFO is obsolete, so you need to use the latest versions, however, this is fine for what we are doing.
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Ok I wish to emulate the functionality that Windows Explorer uses when you select the Folders Explorer bar. I've used Spy++ and learned that the main Rebar sits ontop of a blank window (called BaseClass I think...?) within the rebar there are two other child windows: 1 to the ToolBar X button and the other is the Treeview window. Does anybody know how to achieve this?
 Any help would be nice and appreciated. Thank you.
Ryan
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#define INSTANCES 3 <br />
<br />
char FrameTitles[INSTANCES][]={"LineSync","DoorClosed","DoorLocked"};
I do this in Mainfrm.h . What is wrong here and why are these errors coming ?
<br />
:\Application_dev\SamplerApp\MainFrm.h(16) : error C2087: '<Unknown>' : missing subscript<br />
C:\Application_dev\SamplerApp\MainFrm.h(16) : error C2117: 'LineSync' : array bounds overflow<br />
C:\Application_dev\SamplerApp\MainFrm.h(16) : error C2117: 'DoorClosed' : array bounds overflow<br />
C:\Application_dev\SamplerApp\MainFrm.h(16) : error C2117: 'DoorLocked' : array bounds overflow<br />
SamplerApp.cpp<br />
C:\Application_dev\SamplerApp\MainFrm.h(16) : error C2087: '<Unknown>' : missing subscript<br />
C:\Application_dev\SamplerApp\MainFrm.h(16) : error C2117: 'LineSync' : array bounds overflow<br />
C:\Application_dev\SamplerApp\MainFrm.h(16) : error C2117: 'DoorClosed' : array bounds overflow<br />
C:\Application_dev\SamplerApp\MainFrm.h(16) : error C2117: 'DoorLocked' : array bounds overflow
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You can't have jagged arrays in C. Try this:
char* FrameTitles[INSTANCES] = { "lineSync", "DoorClosed", "DoorLocked" };And if you do that you can drop the INSTANCES constant as well.
--Mike--
PROCRASTINATION: Hard work often pays off after time, but laziness always pays off now.
BUY MY SOFTWARE!! (please?) RightClick-Encrypt | 1ClickPicGrabber
My IntarWeb Homepgae!!!11
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