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Thank you very much. The links you provided are highly valuable to me (I have had a brief look at them, but I will explore them in more detail). The last question. Do you think it makes sense to intercept BitBlt (or may be some other API) in order to get window that displays intercepted text output by calling WindowFromDC( <destination hdc taken from intercepted BitBlt> )? Thanks.
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japcrword wrote: Do you think it makes sense to intercept BitBlt (or may be some other API) in order to get window that displays intercepted text output by calling WindowFromDC( <destination hdc="" taken="" from="" intercepted="" bitblt=""> )? Thanks.
You specifically mentioned StarDict as a reference dictionary/translation product. And you stated that you wanted to create something similar. The source code for this open source project is available here:
http://downloads.sourceforge.net/stardict/stardict-3.0.1.tar.bz2[^]
The file stardict-3.0.1\stardict-3.0.1\src\win32\TextOutHook.c will show you that the following GDI functions are hooked:
TextOutA
TextOutW
ExtTextOutA
ExtTextOutW
The file also contains GetMenuItemInfo and GetWindowText calls. So this is how the product you referenced is implemented.
Now it becomes a philosophical issue. In my opinion the Text Object Model[^] is a superior method of obtaining the text for a product designed to read multiple processes and window text.
Its never a good idea to rely on Window hooks in commercial products. The decision is yours.
Best Wishes,
-David Delaune
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Hi,
I am trying to display the attachments for message which is inside Outlook. There i am retriving the mails from inbox also attachments are displaying, but when I am trying to save in the hard disc it is not working. When I am tried to debug the solution i am getting error at Istream interface please give me solution. I am sending attach.cpp code, it is just win32 console application
/////////////////////////////////////////////////////////////////////////////////////
////////////////////file name:getattach.cpp//////////////////////////////////////
#include
#include
#include <mapix.h>
#include
#include <mapiutil.h>
#define _tcscpy strcpy
#define _tcscmp strcmp
STDMETHODIMP OpenDefaultMessageStore(LPMAPISESSION lpMAPISession,LPMDB * lpMDB);
STDMETHODIMP OpenInbox(LPMDB lpMDB,LPMAPIFOLDER *lpInboxFolder);
STDMETHODIMP ListMessages(LPMDB lpMDB,LPMAPIFOLDER lpInboxFolder);
int main()
{
HRESULT hRes;
LPMAPIFOLDER lpInboxFolder = NULL;
LPMAPISESSION lpMAPISession = NULL;
LPMDB lpMDB = NULL;
LPSPropValue tmp = NULL;
LPMESSAGE lpMessage = NULL;
IMAPISession *pIMapi = NULL;
if(MAPIInitialize(NULL) != S_OK)
return FALSE;
hRes = MAPILogonEx(0,NULL,NULL,MAPI_LOGON_UI, &lpMAPISession);
if (FAILED(hRes))
return FALSE;
hRes = OpenDefaultMessageStore(lpMAPISession,&lpMDB);
if (FAILED(hRes))
return FALSE;
hRes = OpenInbox(lpMDB,&lpInboxFolder);
if (FAILED(hRes))
return FALSE;
hRes = HrGetOneProp(lpInboxFolder,PR_DISPLAY_NAME,&tmp);
if (FAILED(hRes))
return FALSE;
printf("I managed to open the folder '%s'\n",tmp->Value.lpszA);
hRes = ListMessages(lpMDB,lpInboxFolder);
if (FAILED(hRes))
return FALSE;
if(!lpMessage)
return FALSE;
IMAPITable *pAttachTable = NULL;
hRes = lpMessage->GetAttachmentTable(0, &pAttachTable);
}
/////////////////////////////////////////////////////////////////////////////////////////
/* open message store table, This step we are opening the
default message store table.*////////////
STDMETHODIMP OpenDefaultMessageStore(LPMAPISESSION lpMAPISession,LPMDB * lpMDB)
{
LPMAPITABLE pStoresTbl = NULL;
LPSRowSet pRow = NULL;
static SRestriction sres;
SPropValue spv;
HRESULT hRes;
LPMDB lpTempMDB = NULL;
enum {EID, NAME, NUM_COLS};
static SizedSPropTagArray(NUM_COLS,sptCols) = {NUM_COLS, PR_ENTRYID, PR_DISPLAY_NAME};
*lpMDB = NULL;
hRes = lpMAPISession -> GetMsgStoresTable(0, &pStoresTbl);
if (FAILED(hRes))
return FALSE;
sres.rt = RES_PROPERTY;
sres.res.resProperty.relop = RELOP_EQ;
sres.res.resProperty.ulPropTag = PR_DEFAULT_STORE;
sres.res.resProperty.lpProp = &spv;
spv.ulPropTag = PR_DEFAULT_STORE;
spv.Value.b = TRUE;
hRes = HrQueryAllRows(pStoresTbl,(LPSPropTagArray) &sptCols,&sres,NULL,0,&pRow);
if (FAILED(hRes))
goto quit;
hRes = lpMAPISession->OpenMsgStore(NULL,pRow->aRow[0].lpProps[EID].Value.bin.cb,
(LPENTRYID)pRow->aRow[0].lpProps[EID].Value.bin.lpb,NULL,MAPI_BEST_ACCESS,
&lpTempMDB);
if (FAILED(hRes))
goto quit;
*lpMDB = lpTempMDB;
quit: //quit label
FreeProws(pRow);
UlRelease(pStoresTbl);
if (FAILED(hRes))
{
HRESULT hr;
LPMAPIERROR lpError;
hr = lpMAPISession->GetLastError(hRes,0,&lpError);
if (!hr)
{
printf("%s\n%s\n",lpError->lpszError,lpError->lpszComponent);
MAPIFreeBuffer(lpError);
}
}
return hRes;
}
//////* CLOSE open message store table, Now we are opened default message store*////////////
/////////////////////////////////////////////////////////////////////////////////////////
/////////////////* Now in this we have to open inbox*///////////////////////////////////
STDMETHODIMP OpenInbox(LPMDB lpMDB, LPMAPIFOLDER *lpInboxFolder)
{
ULONG cbInbox;
LPENTRYID lpbInbox;
ULONG ulObjType;
HRESULT hRes = S_OK;
LPMAPIFOLDER lpTempFolder = NULL;
*lpInboxFolder = NULL;
hRes = lpMDB->GetReceiveFolder(NULL,NULL,&cbInbox,&lpbInbox,NULL);
if (FAILED(hRes))
goto quit;
hRes = lpMDB->OpenEntry(cbInbox,lpbInbox,NULL,MAPI_BEST_ACCESS,
&ulObjType,(LPUNKNOWN *) &lpTempFolder);
if (FAILED(hRes))
goto quit;
*lpInboxFolder = lpTempFolder;
quit:
MAPIFreeBuffer(lpbInbox);
return hRes;
}
//////////////* Now sucessfully opened the INBOX *//////////////////
///////////////////////////////////////////////////////////////////
///////////* List the messages which is inside INBOX*/////////////
STDMETHODIMP ListMessages(LPMDB lpMDB,LPMAPIFOLDER lpInboxFolder)
{
HRESULT hRes = S_OK;
LPMAPITABLE lpContentsTable = NULL;
LPSRowSet pRows = NULL;
LPSTREAM lpStream = NULL;
ULONG i;
enum
{
ePR_SENT_REPRESENTING_NAME,
ePR_SUBJECT,
ePR_BODY,
ePR_PRIORITY,
ePR_ENTRYID,
NUM_COLS
};
static SizedSPropTagArray(NUM_COLS,sptCols) =
{ NUM_COLS, PR_SENT_REPRESENTING_NAME, PR_SUBJECT,
PR_BODY, PR_PRIORITY, PR_ENTRYID };
hRes = lpInboxFolder->GetContentsTable(0,&lpContentsTable);
if (FAILED(hRes))
goto quit;
hRes = HrQueryAllRows(lpContentsTable,(LPSPropTagArray) &sptCols,NULL,NULL,0,&pRows);
if (FAILED(hRes))
goto quit;
for (i = 0; i < pRows -> cRows; i++)
{
LPMESSAGE lpMessage = NULL;
ULONG ulObjType = NULL;
LPSPropValue lpProp = NULL;
printf("Message %d:\n",i);
if (PR_SENT_REPRESENTING_NAME == pRows -> aRow[i].lpProps[ePR_SENT_REPRESENTING_NAME].ulPropTag)
{
printf("From: %s\n",pRows->aRow[i].lpProps[ePR_SENT_REPRESENTING_NAME].Value.lpszA);
}
if (PR_SUBJECT == pRows -> aRow[i].lpProps[ePR_SUBJECT].ulPropTag)
{
printf("Subject: %s\n",pRows->aRow[i].lpProps[ePR_SUBJECT].Value.lpszA);
}
if (PR_PRIORITY == pRows -> aRow[i].lpProps[ePR_PRIORITY].ulPropTag)
{
printf("Priority: %d\n",pRows->aRow[i].lpProps[ePR_PRIORITY].Value.l);
}
/////////////////////body///////////////////////////////////////////////////////
if (MAPI_E_NOT_FOUND != pRows -> aRow[i].lpProps[ePR_BODY].Value.l)
{
hRes = lpMDB->OpenEntry(pRows->aRow[i].lpProps[ePR_ENTRYID].Value.bin.cb,
(LPENTRYID) pRows->aRow[i].lpProps[ePR_ENTRYID].Value.bin.lpb,NULL,
MAPI_BEST_ACCESS,&ulObjType,(LPUNKNOWN *) &lpMessage);
if (!FAILED(hRes))
{
hRes = HrGetOneProp(lpMessage,PR_BODY,&lpProp);
if (hRes == MAPI_E_NOT_ENOUGH_MEMORY)
{
char szBuf[255];
ULONG ulNumChars;
hRes = lpMessage->OpenProperty(PR_BODY,&IID_IStream,STGM_READ,NULL,
(LPUNKNOWN *) &lpStream);
do
{
lpStream->Read(szBuf,255,&ulNumChars);
if (ulNumChars >0) printf("%.*s",ulNumChars,szBuf);
}
while (ulNumChars >= 255);
printf("\n");
hRes = S_OK;
}
else if (hRes == MAPI_E_NOT_FOUND)
{
printf("Message has no body!\n");
hRes = S_OK;
}
else
{
printf("Body: %s\n",lpProp->Value.lpszA);
}
}
//////////////////////////////////////////////////////////////////////////////
///////start for displaying a attachment/////////////////////////////////////
if(!lpMessage)
goto a;
IMAPITable *pAttachTable = NULL;
hRes = lpMessage->GetAttachmentTable(0, &pAttachTable);
SRowSet *pAttachRowSet = NULL;
SizedSPropTagArray(3, tblAttachColumns)={3,{PR_ATTACH_NUM,PR_ATTACH_SIZE,PR_ATTACH_FILENAME}};
pAttachTable->SetColumns((LPSPropTagArray)&tblAttachColumns, 0);
hRes = pAttachTable->QueryRows(1, 0, &pAttachRowSet);
if(pAttachRowSet->cRows != 1)
goto a;
long lAttachNum = 0;
DWORD dwAttachSize = 0;
TCHAR tchAttachName[MAX_PATH] = TEXT("\0");
lAttachNum = pAttachRowSet->aRow[0].lpProps[0].Value.l;
dwAttachSize = pAttachRowSet->aRow[0].lpProps[1].Value.ul;
char *ptr=tchAttachName;
const char *ptr1=(char*)pAttachRowSet->aRow[0].lpProps[2].Value.lpszW;
_tcscpy(ptr,ptr1);
printf("attachment name is:",ptr1,"\n");
IAttach *pAttach = NULL;
hRes = lpMessage->OpenAttach(lAttachNum, 0, 0, &pAttach);
if(FAILED(hRes))
goto a;
IStream *pAttachStream = NULL;
HANDLE hAttachFile = NULL;
TCHAR tchFilePath[MAX_PATH] = TEXT("\0");
wsprintf(tchFilePath, TEXT("\\%s"), tchAttachName);
hAttachFile = CreateFile(tchFilePath, GENERIC_WRITE, 0, NULL,CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
hRes=pAttach->OpenProperty(PR_ATTACH_DATA_BIN, NULL, 0, 0,(IUnknown **)&pAttachStream);
if(hAttachFile == INVALID_HANDLE_VALUE || FAILED(hRes))
goto a;
LPVOID lpBuffer = NULL;
DWORD dwRead = 0, dwWritten = 0;
lpBuffer = (LPVOID)LocalAlloc(LPTR, 4096);
do
{
memset(lpBuffer, 0, 4096);
pAttachStream->Read(lpBuffer, 4096, &dwRead);
// actual problem here, Because pattachstream is storing null, giving a debug error.
if(dwRead > 0)
WriteFile(hAttachFile, lpBuffer, dwRead, &dwWritten,NULL);
} while(dwRead > 0);
CloseHandle(hAttachFile);
LocalFree(lpBuffer);
FreeProws(pAttachRowSet);
}
a:
MAPIFreeBuffer(lpProp);
UlRelease(lpMessage);
hRes = S_OK;
}
quit:
FreeProws(pRows);
UlRelease(lpContentsTable);
return hRes;
}
sampath-padamatinti
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is reading carefully this [^].
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]
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sampath-padamatinti wrote: ...but when I am trying to save in the hard disc it is not working.
Is this supposed to represent something meaningful? Use the debugger to narrow the problem down to just a few statements.
Why all the goto calls? They make your code even harder to debug.
"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
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char as return type works fine,
<br />
extern "C" char _declspec(dllimport) Test();<br />
<br />
_declspec(dllexport) char Test()<br />
{<br />
return 't';<br />
}<br />
But why char* doesn't work here as the return type?
<br />
extern "C" char* _declspec(dllimport) Test();<br />
<br />
_declspec(dllexport) char* Test()<br />
{<br />
return "Test From DLL";<br />
}<br />
----------------------------
286? WOWW!
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_8086 wrote: But why char* doesn't work here as the return type?
Can you define what you mean by 'doesn't work'?
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
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<br />
error C2059: syntax error : '__declspec(dllimport)'<br />
----------------------------
286? WOWW!
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By the way, I'm keeping
extern "C" char* _declspec(dllimport) Test();
in a .h file.
----------------------------
286? WOWW!
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This is just a hunch, but the declaration looks a little off. Try putting char* after the _declspec, instead of before it; that worked for me
Between the idea
And the reality
Between the motion
And the act
Falls the Shadow
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After some tests, I found that the first 4 bytes is vptr, which is followed by data members.
Where is the run time type info?
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Well you could use typid, and then look in the disassembly what it really does, right?
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It's held in a separate area - it's a per-class thing, whereas instance data isn't. I suspect the vtable (which the vptr points at) contains the run-time type-info. As the other answer said, trace through the VC++ code for doing it
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
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I need to configure some application variables. I have a CFormView and via menu conmstruct a simple CDialog. However, after DoModal returns TDOK I am unable to retrieve the CComboBox selection - not even the GetCount returns number of items in the CComboBox. I seldom use CDialog but this got me stumped, I am obviously missing an important piece of code.
Thanks for reading and your help is as always appreciated.
Here is the offending code:
void CFD2008View::OnConfigureSetup()
{
CString strText;
CComboBox* pCombo10;
int nIndex;
int nCount;
// verify document
if(!m_CFD2008Doc)
m_CFD2008Doc = GetDocument();
VERIFY (m_CFD2008Doc);
CDialog dlg(IDD_DIALOG1);
if (dlg.DoModal()==IDOK){
TRACE("\nvoid CFD2008View::OnConfigureSetup() ");
pCombo10 = (CComboBox *) GetDlgItem(IDC_COMBO10);
VERIFY(pCombo10);
nIndex = pCombo10->GetCurSel();
//always returns 0
nCount = pCombo10->GetCount();
// always returns 0
}
}
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Try using
pCombo10 = (CComboBox *) dlg.GetDlgItem(IDC_COMBO10);
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
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When DoModal returns, the dialog box window (and combo box) have been destroyed, so attempting to access them won't work.
Instead, you could pass a pointer to the CFD2008View into the dialog - one way is
CDialog dlg(IDD_DIALOG1);
dlg.m_pView = this;
if (dlg.DoModal()... Of course, you need to define a member variable in the dialog to hold this pointer (m_pView). Then in the view class, add member variables for the information you're trying to get. Now in the dialog's OnOK function, set the view class variable so they contain the desired information.
Note that getting the count, or a pointer to the combo box will be useless as it's going to be destroyed. If you need to know the value of a selected combo box items, you'll need to find that value in the dialog's OnOK, and set that value into the view class.
Hope that helps.
Karl - WK5M
PP-ASEL-IA (N43CS)
PGP Key: 0xDB02E193
PGP Key Fingerprint: 8F06 5A2E 2735 892B 821C 871A 0411 94EA DB02 E193
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Thanks guys. I used both of yours advices and came up with this.
X_ConfigureDialog dlg; // derived from CDialog with IDD_DIALOG1 resource;
if (dlg.DoModal()==IDOK){
// pass dialog data to current view
// or use directly in current view
m_strBand = dlg.m_ComboBox10;
m_strMode = dlg.m_ComboBox20;
}
Conclusion
1. Do not use CDialog "directly" as local variable.
2. Derive view class variable from CDialog - I guess I should have known that.
3. Let DDX/DDV do its stuff - when DoModal completes.
It still puzzles me why dlg is valid when used as derived class. I guess MFC / C++ class hierary magic.
Thanks Vaclav
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Hey,
When obtaining a key to decrypt a file encrypted using RC4 algorithm, CryptImportKey() fails.
The error says, "Invalid type specified".
What may be the possible reasons for this ? 
It fails when I export the key in one application and import it in another application.
Has this something to do with storage of keyBLOB (I store it in a text file while exporting the key and read it from the text file while importing from a different application)?
Or is there some other reason that may lead it to failure.
Please reply at the earliest.....
Regards,
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hi..
can i connect to the internet through c?
i prepared an application but am stuck up with the actual headers to be used..
please help
custom website design
modified on Friday, June 19, 2009 5:17 AM
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Using internet means what? Even sending a file across n/w would mean "using internet".
----------------------------
286? WOWW!
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C can do anything u tell it to do!!! it is probably the language that is in control of any bit of hardware u look at today.
here is a good embedded stack that is scaleable and will make your toaster TCP/IP compatible
http://www.sics.se/~adam/uip/index.php/Main_Page[^]
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Use WinInet[^] - that's the Microsoft internet library that's C compatible that I'd use.
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
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thanks a ton for this.. i wanted this..
thanksssssssssssssssssssssssssss
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If I define the constructor of typedef struct, it will appear some error(error C4430,errorC4183). How do I solve this problem?
struct b
{
b()
{
}
b(int p1)
{
m_p1=p1;
}
int m_p1;
};
typedef struct
{
a()
{
}
a(int p1)
{
m_p1=p1;
}
int m_p1;
}a;
1>d:\windowsxpdoc\visual studio 2008\projects\t3\t3\t3dlg.cpp(156) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>d:\windowsxpdoc\visual studio 2008\projects\t3\t3\t3dlg.cpp(158) : warning C4183: 'a': missing return type; assumed to be a member function returning 'int'
1>d:\windowsxpdoc\visual studio 2008\projects\t3\t3\t3dlg.cpp(161) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>d:\windowsxpdoc\visual studio 2008\projects\t3\t3\t3dlg.cpp(163) : warning C4183: 'a': missing return type; assumed to be a member function returning 'int'
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