|
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)
{
return 0;
}
Knock out 't' from can't,
You can if you think you can
|
|
|
|
|
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
|
|
|
|
|
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
|
|
|
|
|
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
LINKS~! Ericahist | PimpFish | CP SearchBar v3.0 | C++ Forum FAQ
|
|
|
|
|
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
|
|
|
|
|
WhiteSky wrote: _beginthread(MyThread,0,NULL);
You meant _beginthread(MyThread,0,this); no ?
Cédric Moonen
Software developer
Charting control
|
|
|
|
|
yes
whitesky
|
|
|
|
|
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.,.
|
|
|
|
|
|
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.,.
|
|
|
|
|
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 />
<br />
CBitmap bmp ;<br />
VARIANT p1;<br />
PICTDESC desc;<br />
HRESULT hres;<br />
<br />
bmp.LoadBitmap(IDB_BITMAP1);<br />
VariantInit(&p1);<br />
<br />
desc.cbSizeofstruct = sizeof(PICTDESC) ;<br />
desc.picType = PICTYPE_BITMAP;<br />
desc.bmp.hbitmap = (HBITMAP)bmp.GetSafeHandle();<br />
IPicture *pd;<br />
<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 />
<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 />
pPicture->get_Width(&lWidth);<br />
pPicture->get_Height(&lHeight);<br />
<br />
iWidth = (lWidth * GetDeviceCaps(pDC, LOGPIXELSX)) / 2540;<br />
iHeight = (lHeight * GetDeviceCaps(pDC, LOGPIXELSY)) / 2540;<br />
<br />
pPicture->Render(pDC, 0, 0, iWidth, iHeight, 0, lHeight, lWidth, -lHeight, 0);<br />
<br />
<br />
<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
|
|
|
|
|
Do you have one handle bitmap (of course is valid)?
whitesky
|
|
|
|
|
Sorry, What do you mean?
-- modified at 6:56 Friday 9th June, 2006
|
|
|
|
|
maybe your handle isnt valid or its null
whitesky
|
|
|
|
|
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.
|
|
|
|
|
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
|
|
|
|
|
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
|
|
|
|
|
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
|
|
|
|
|
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
|
|
|
|
|
If include this code in GetImage()-Methode , it happens nothing
(no File under the path " C:\work\test\test.bmp".
HBITMAP hBmp = (HBITMAP)bmp.GetSafeHandle();<br />
CImage m_Image;<br />
m_Image.Attach(hBmp);<br />
m_Image.Save("C:\work\test\test.bmp");<br />
m_Image.Detach();
And if i include the follow code in the Application under OnBnClickedButton1
pPicture->get_Handle((OLE_HANDLE FAR *) &hBmp);<br />
<br />
<br />
CImage m_Image;<br />
m_Image.Attach(hBmp);<br />
m_Image.Save("C:\work\test\test.bmp");<br />
m_Image.Detach();
it happens nothing
(no File under the path " C:\work\test\test.bmp") and it comes to a error.
|
|
|
|
|
yes you get one error nBytes==Sizeof....
and if you use GetObject you cant get width and height and i think my guess is true (i hope)you dont have one handle bitmap.See here
<br />
CBitmap bmp ;<br />
PICTDESC desc;<br />
<br />
long lWidth, lHeight;<br />
int iWidth, iHeight;<br />
<br />
HBITMAP hbit=(HBITMAP)LoadImage(AfxGetApp()->m_hInstance,"c:\\0.bmp",IMAGE_BITMAP, 0,0,LR_LOADFROMFILE);<br />
bmp.Attach(hbit);<br />
<br />
desc.cbSizeofstruct = sizeof(PICTDESC) ;<br />
desc.picType = PICTYPE_BITMAP;<br />
desc.bmp.hbitmap = (HBITMAP)bmp.GetSafeHandle();<br />
IPicture *pd;<br />
<br />
::OleCreatePictureIndirect(&desc, IID_IPicture, FALSE,(LPVOID*)&pd);<br />
<br />
pd->get_Width(&lWidth);<br />
pd->get_Height(&lHeight);<br />
<br />
iWidth = (lWidth * GetDeviceCaps(GetDC()->m_hDC, LOGPIXELSX)) / 2540;<br />
iHeight = (lHeight * GetDeviceCaps(GetDC()->m_hDC, LOGPIXELSY)) / 2540;<br />
CRect Rect(0,0,iWidth,iHeight);<br />
<br />
pd->Render(GetDC()->m_hDC,0,0, <br />
Rect.right - Rect.left,<br />
Rect.bottom - Rect.top,<br />
0,lHeight,<br />
lWidth,-lHeight,<br />
&Rect);<br />maybe it is some helpful to you
whitesky
|
|
|
|
|
Thats it! Thank u very much!
<br />
VARIANT_BOOL CGetImageCtrl::getImage(VARIANT* image)<br />
{<br />
AFX_MANAGE_STATE(AfxGetStaticModuleState());<br />
<br />
<br />
VARIANT p1;<br />
PICTDESC desc;<br />
HRESULT hres;<br />
<br />
bmp.LoadBitmap(IDB_BITMAP1);
VariantInit(&p1);<br />
<br />
desc.cbSizeofstruct = sizeof(PICTDESC) ;<br />
desc.picType = PICTYPE_BITMAP;<br />
desc.bmp.hbitmap = (HBITMAP)bmp.GetSafeHandle();<br />
<br />
IPicture *pd;<br />
<br />
hres = ::OleCreatePictureIndirect(&desc, IID_IPicture, FALSE,(LPVOID*)&pd);<br />
<br />
<br />
<br />
if(SUCCEEDED(hres))<br />
{<br />
p1.vt = VT_UNKNOWN;<br />
p1.punkVal = pd;<br />
<br />
*image = p1;<br />
}<br />
<br />
return VARIANT_TRUE;<br />
}
/////////////////////////////////////////////////////////////////////////7
<br />
void CGetImageTestDlg::OnBnClickedButton1()<br />
{<br />
<br />
<br />
VARIANT image;<br />
IUnknown* pUnk;<br />
IPicture *pPicture= 0;<br />
long lWidth, lHeight;<br />
int iWidth, iHeight;<br />
<br />
<br />
<br />
VariantInit(&image);<br />
m_myGetImage.getImage(&image);<br />
<br />
pUnk = image.punkVal;<br />
HRESULT hr = pUnk->QueryInterface(&pPicture);<br />
<br />
if(SUCCEEDED(hr))<br />
{ <br />
pPicture->get_Width(&lWidth);<br />
pPicture->get_Height(&lHeight);<br />
<br />
iWidth = (lWidth * GetDeviceCaps(GetDC()->m_hDC, LOGPIXELSX)) / 2540;<br />
iHeight = (lHeight * GetDeviceCaps(GetDC()->m_hDC, LOGPIXELSY)) / 2540;<br />
<br />
CRect Rect(0,0,iWidth,iHeight);<br />
<br />
pPicture->Render(GetDC()->m_hDC,0,0,Rect.right - Rect.left,Rect.bottom - Rect.top,0,lHeight,lWidth,-lHeight,&Rect);<br />
<br />
}<br />
else MessageBox("The Displaying of the Image is not possible!");<br />
<br />
}<br />
|
|
|
|
|
How can i make the combo box to drop down automatically?
|
|
|
|
|
m_combobox.SendMessage(CB_SHOWDROPDOWN ,(WPARAM)true,0);
Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_
|
|
|
|
|
Just follow the method below u will get ur rsult.
Right click on the combo box;
Select ‘Properties’ from the list displayed. This will open the ‘Properties’ window;
Click on ‘Event’ tab and place your cursor next to the ‘On Got Focus’ event;
Then, click on the ‘…’ button;
Select ‘Code Builder’ from the code builder window and click on OK.
The following Subprocedure will be created:
Private Sub Combo2_GotFocus()
End Sub
You can also call the function on Event of Mouse Move.
OK
|
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
