C / C++ / MFC Discussion Boards

Sarath C9-Jun-06 1:34

9-Jun-06 1:34

Actually what are you trying to do?

Sa^Rath.

"Don't Do Different things... Do Things Differently..."

Understanding State Pattern in C++

Re: kalk

toxcct9-Jun-06 1:36

toxcct

9-Jun-06 1:36

Mr. JAYARAJ,

do you have any king of trouble with MySQL ?
unless it is with your keyboard ?! Suspicious | :suss:

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: kalk

Laxman Auti9-Jun-06 2:11

Laxman Auti

9-Jun-06 2:11

I think you have trouble in your brain?
Sorry....this is wrong forum. Smile | :)

Knock out 't' from can't,
You can if you think you can
Cool | :cool:

Re: kalk

_AnsHUMAN_ 9-Jun-06 2:12

_AnsHUMAN_

9-Jun-06 2:12

Encrypted query* Cry | :((

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Re: kalk

J51219829-Jun-06 18:21

J5121982

9-Jun-06 18:21

just for fun!!!

sorry for disturbing u all !!!!

JAYARAJ

trouble with _beginthread

NoName II9-Jun-06 1:01

NoName II

9-Jun-06 1:01

_beginthread(CopyProcessTh, 0, NULL);//error C3867: 'CDlg::CopyProcessTh': function call missing argument list; use '&CDlg::CopyProcessTh' to create a pointer to member

void CDlg::CopyProcessTh(void * p)
{
dlg=new CCopyInterface(this);
if (m_copiedFile.GetLength()!=0)
{
dlg->CopyFileFunct(m_copiedFile,m_leftFolder);
}

}

Re: trouble with _beginthread

Laxman Auti9-Jun-06 1:08

Laxman Auti

9-Jun-06 1:08

NoName II wrote:

_beginthread(CopyProcessTh, 0, NULL);//error C3867: 'CDlg::CopyProcessTh': function call missing argument list; use '&CDlg::CopyProcessTh' to create a pointer to member

1) Made the CopyProcessTh as a static in the class which returns UINT from the function which is recommended to terminate the thread.
OR
2) Seperate out the function from the class with following prototype

UINT CopyProcessTh(LPVOID pparam)
{
   //Do your Stuff here.
   return 0;
}

Knock out 't' from can't,
You can if you think you can
Cool | :cool:

Re: trouble with _beginthread

NoName II9-Jun-06 1:20

NoName II

9-Jun-06 1:20

I can't made CopyProcessTh as a static cause it should operate with nonstatic members..

as for the 2nd...error C3867: 'CDlg::CopyProcessTh': function call missing argument list; use '&CDlg::CopyProcessTh' to create a pointer to member

Re: trouble with _beginthread

Cedric Moonen9-Jun-06 1:24

Cedric Moonen

9-Jun-06 1:24

NoName II wrote:
I can't made CopyProcessTh as a static cause it should operate with nonstatic members..

You can't pass a non-static member function to _beginthread. The reason is that static and non-static member functions don't have the same prototype. Non-static member functions have an implicit parameter that is passed: the 'this' parameter. Look at the post of WhyteSky for the 'workaround' to this problem.

Cédric Moonen
Software developer

Charting control

Re: trouble with _beginthread

Michael Dunn9-Jun-06 1:09

Michael Dunn

9-Jun-06 1:09

There was a recent change to C++ that says you can't write class_name::function_name to get a pointer to the function, you have to write &class_name::function_name

--Mike--
Visual C++ MVP Cool | :cool:

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Re: trouble with _beginthread

Hamid_RT9-Jun-06 1:19

Hamid_RT

9-Jun-06 1:19

See

<br />
void MyThread( LPVOID pv );<br />
...<br />
...<br />
void CTest::RunThread()<br />
{<br />
_beginthread(MyThread,0,NULL);<br />
}<br />
<br />
<br />
void MyThread( LPVOID pv )<br />
{<br />
CTest* m_Answer = (CTest*) pv;<br />
<br />
m_Answer->Modify();<br />
<br />
}<br />
<br />
void CTest::Modify()<br />
{<br />
	MessageBox("A");<br />
}

whitesky

Re: trouble with _beginthread

Cedric Moonen9-Jun-06 1:22

Cedric Moonen

9-Jun-06 1:22

WhiteSky wrote:
_beginthread(MyThread,0,NULL);

You meant _beginthread(MyThread,0,this); no ?

Cédric Moonen
Software developer

Charting control

Re: trouble with _beginthread

Hamid_RT9-Jun-06 1:41

Hamid_RT

9-Jun-06 1:41

yes

whitesky

problem in inserting image into the database

maharaja pandian9-Jun-06 0:46

maharaja pandian

9-Jun-06 0:46

hi,
i develop one application in VC++-MFC 6.0 ,
this application is responsible for inserting image into the database (oracle)-ODBC.
but when i try to insert a image file , it through a error like
"Data type conversion error."
////////////////////////////////////////////////////////////////////////
CDaoDatabse db;
CDaoRecordset recset(&db);
void CDBODBC::InsertintoDB();
{
CByteArray BlobFile;
BlobFile.RemoveAll(); // I clear the Array
CFile aFile("image.jpg",CFile::modeRead);
BlobFile.SetSize(aFile.GetLength());
aFile.Read(BlobFile.GetData(),aFile.GetLength());
aFile.Close();
COleVariant aVar(BlobFile);
CString Sql = "SELECT * FROM sample3";
db.Open("abc",FALSE,FALSE,"ODBC;UID=abc;PWD=abc;DSN=abc;");
recset.Open(AFX_DAO_USE_DEFAULT_TYPE,Sql,dbAppendOnly);
// bool b=recset.CanUpdate();
recset.AddNew();

recset.SetFieldValue("[num]","6"); //varchar field
recset.SetFieldValue("[photo]",aVar); //BLOB field -image field
recset.Update();
recset.Close();
db.Close();

}
/////////////////////////////////////
it works for Access database ..
but i got error in oracle...
"Data type conversion error."

Try again and again,
At last you will say
I don't know the meaning for impossible.,.

Re: problem in inserting image into the database

Ștefan-Mihai MOGA9-Jun-06 0:58

Ștefan-Mihai MOGA

9-Jun-06 0:58

The solution you may found it in Shekar Narayanan's Using CLongBinary for BLOBs[^] Smile | :)

Re: problem in inserting image into the database

maharaja pandian9-Jun-06 1:22

maharaja pandian

9-Jun-06 1:22

tnx,
but , it is MSACCESS database with the column datatype of "OLE Object"
so using COleVariant class,we convert the image as bytestream to COlevariant..
but i want to do the same thing for oracle ..with the column datatype "BLOB"
here also i create same COleVariant ,but it doesn't acceptable by database field "BLOB".....

"Data type Conversion error"

Try again and again,
At last you will say
I don't know the meaning for impossible.,.

Problem with IPicture-Object and Render

masanne9-Jun-06 0:37

masanne

9-Jun-06 0:37

Hi!

I have here a activeX- component "spectrometer.ocx" with the method "getImage(VARIANT *image)".
If a Application call this method, the activeX have to give back a bitmap (which was included in the ressourses). The bitmap have to convers in a VARIANT.

the Method:

<br />
BOOL CSpectrometerCtrl::getImage(VARIANT* image)<br />
{<br />
AFX_MANAGE_STATE(AfxGetStaticModuleState());<br />
<br />
// TODO: Fügen Sie hier Ihren Dispatchhandlercode ein.<br />
<br />
CBitmap bmp ;<br />
VARIANT p1;<br />
PICTDESC desc;<br />
HRESULT hres;<br />
<br />
bmp.LoadBitmap(IDB_BITMAP1);<br />
VariantInit(&p1);<br />
<br />
// setup pictdesc structure<br />
desc.cbSizeofstruct = sizeof(PICTDESC) ;<br />
desc.picType = PICTYPE_BITMAP;<br />
desc.bmp.hbitmap = (HBITMAP)bmp.GetSafeHandle();<br />
IPicture *pd;<br />
<br />
// create the StdPicture object<br />
hres = ::OleCreatePictureIndirect(&desc, IID_IPicture, FALSE,(LPVOID*)&pd);<br />
<br />
<br />
if(SUCCEEDED(hres))<br />
{<br />
p1.vt = VT_UNKNOWN;<br />
p1.punkVal = pd;<br />
<br />
*image = p1;<br />
<br />
return TRUE;<br />
}<br />
else<br />
return FALSE;<br />
}

In my Application i call this method and i want that the bitmap is shown on a dialog.

void CSpectrometerTestDlg::OnBnClickedButton1()<br />
{<br />
// TODO: Fügen Sie hier Ihren Kontrollbehandlungscode für die Benachrichtigung ein.<br />
<br />
VARIANT imageData;<br />
IUnknown* pUnk;<br />
IPicture *pPicture= 0;<br />
long lWidth, lHeight;<br />
int iWidth, iHeight;<br />
<br />
CClientDC pDC(this);<br />
<br />
CDC memdc;<br />
memdc.CreateCompatibleDC(&pDC);<br />
<br />
VariantInit(&imageData);<br />
m_mySpectrometer.getImage(&imageData);<br />
<br />
pUnk = imageData.punkVal;<br />
HRESULT hr = pUnk->QueryInterface(&pPicture);<br />
<br />
if(SUCCEEDED(hr))<br />
{<br />
//breite u. höhe vom bild holen<br />
pPicture->get_Width(&lWidth);<br />
pPicture->get_Height(&lHeight);<br />
<br />
//in Pixel konvertieren<br />
iWidth = (lWidth * GetDeviceCaps(pDC, LOGPIXELSX)) / 2540;<br />
iHeight = (lHeight * GetDeviceCaps(pDC, LOGPIXELSY)) / 2540;<br />
<br />
//Bild anzeigen mittels Render<br />
pPicture->Render(pDC, 0, 0, iWidth, iHeight, 0, lHeight, lWidth, -lHeight, 0);<br />
<br />
////// VERSUCH ÜBER DER Ausgabe über die CBitmap Klasse//////////////////////////<br />
//HBITMAP hBmp ;<br />
//pPicture->get_Handle((OLE_HANDLE FAR *) &hBmp);<br />
<br />
//// create a temporary bitmap<br />
//CBitmap * TempBmp = CBitmap::FromHandle(hBmp);<br />
<br />
//memdc.SelectObject(TempBmp);//select original bitmap<br />
<br />
//pDC.BitBlt(200, 300, iWidth, iHeight, &memdc, 0, 0, SRCCOPY);<br />
/////////////////////////////////////////////////////////////////////////////////<br />
}<br />
<br />
}

The variables "iWidth, iHeight" have already the right values. It means that something comes on but the displaying doesn't work.

Is there someone with a Idea? What is wrong?

Thanks

-- modified at 6:50 Friday 9th June, 2006

Re: Problem with IPicture-Object and CPictureHolder::Renderpicture

Hamid_RT9-Jun-06 0:50

Hamid_RT

9-Jun-06 0:50

Do you have one handle bitmap (of course is valid)?

whitesky

Re: Problem with IPicture-Object and Render

masanne9-Jun-06 0:55

masanne

9-Jun-06 0:55

Sorry, What do you mean?

-- modified at 6:56 Friday 9th June, 2006

Re: Problem with IPicture-Object and Render

Hamid_RT9-Jun-06 1:10

Hamid_RT

9-Jun-06 1:10

maybe your handle isnt valid or its null

whitesky

Re: Problem with IPicture-Object and Render

masanne9-Jun-06 1:20

masanne

9-Jun-06 1:20

I think not because in my Application the values iHeight and iWidth of the bitmap are right. that means for me, that the handle "desc.bmp.hbitmap = (HBITMAP)bmp.GetSafeHandle();" is valid.

Re: Problem with IPicture-Object and Render

Hamid_RT9-Jun-06 2:18

Hamid_RT

9-Jun-06 2:18

yes you have one handle hbitmap (desc.bmp.hbitmap ) but in OnBnClickedButton1
i think(not sure)you dont have one valid handle pPicture->get_Handle((OLE_HANDLE FAR *) &hBmp);
what size(parametes) from hBmp GetObject(hBmp,sizeof(bm),&bm);

whitesky

Re: Problem with IPicture-Object and Render [modified]

masanne9-Jun-06 2:49

masanne

9-Jun-06 2:49

	pPicture->get_Handle((OLE_HANDLE FAR *) &hBmp);<br />
<br />
<br />
		if (hBmp)  <br />
		{  		<br />
                        MesssageBox("it exists");<br />
		}

After "if" it comes the MesssageBox .

But if i do the follow:

if(GetObject(hBmp,sizeof(BMP), &BMP)==0) MessageBox("0 bytes");

it comes the MessageBox also.

Is the hBMP valid or not?

-- modified at 9:00 Friday 9th June, 2006

Re: Problem with IPicture-Object and Render [modified]

masanne9-Jun-06 3:00

masanne

9-Jun-06 3:00

And why work the follow code:

pPicture->get_Width(&lWidth);<br />
    pPicture->get_Height(&lHeight);

Width and Height are correct . the same size of the original bitmap.

But

pPicture->get_Width(&lWidth);<br />
		pPicture->get_Height(&lHeight);

is not valid.

I not understand

Re: Problem with IPicture-Object and Render

Hamid_RT9-Jun-06 3:22

Hamid_RT

9-Jun-06 3:22

Dear masanne,
its not way but usually i test hbitmap with this
if you run this code in getImage for bmp then you get one file in drive c

<br />
CImage m_Image;<br />
m_Image.Attach(hBmp);<br />
m_Image.Save("c:\\test.bmp");<br />
m_Image.Detach();<br />

but if you run this code in OnBnClickedButton1
/*pPicture->get_Handle((OLE_HANDLE FAR *) &hBmp);*/for hBmp you get one error
can you test this code and answer to me,please? of course include atlImage.h

whitesky

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