C / C++ / MFC

Hamid_RT17-Nov-08 23:32

17-Nov-08 23:32

HWND hwnd=yourchildwindow
HDC hdc=::GetDC(hwnd);
SetBKcolor(hdc,RGB(53,97,200);

Pryabu18-Nov-08 0:09

18-Nov-08 0:09

It is not working.

Hamid_RT18-Nov-08 0:48

18-Nov-08 0:48

Wheres problem did you use of debugger hwnd is null or hdc?

Pryabu18-Nov-08 1:19

18-Nov-08 1:19

hWnd and hdc is pointing to some value, not NULL.

Hamid_RT18-Nov-08 1:35

18-Nov-08 1:35

How did you get hwnd?

Pryabu18-Nov-08 1:39

18-Nov-08 1:39

Return value of CreateWindow.

Pryabu19-Nov-08 18:41

19-Nov-08 18:41

Thanks i got it.

toxcct18-Nov-08 1:49

toxcct

18-Nov-08 1:49

Roay wrote:
hi

Hi !

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Iain Clarke, Warrior Programmer

Iain Clarke, Warrior Programmer18-Nov-08 1:58

18-Nov-08 1:58

1/ try using a more helpful subject than "hi". Though it's polite at least!

2/ what kind of window is it?

3/ is it in your own source code, or do you mean someone else's window?

Iain.

Hamid_RT18-Nov-08 2:11

18-Nov-08 2:11

Iain Clarke wrote:
try using a more helpful subject than "hi". Though it's polite at least

Subject: hi Iain Big Grin | :-D

CPallini18-Nov-08 3:10

CPallini

18-Nov-08 3:10

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]

Code not ruuning in Release but runs in Debug

Nishad S18-Nov-08 2:02

Nishad S

18-Nov-08 2:02

What kind of window you are creating?

If it is a predefined window (like, edit, static, etc.) then there are specific ways for that.

If not, you can use SetClassLong with GCL_HBRBACKGROUND to change the background color.

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[ODBaseBtn]

Fatal error

MsmVc17-Nov-08 22:47

MsmVc

17-Nov-08 22:47

Hi All

I am useing VC2005.When i build the code then i am geting this error .Plz help me

\program files\microsoft visual studio 8\vc\platformsdk\include\windef.h(176) : fatal error C1083: Cannot open include file: 'winnt.h': No such file or directory

Re: Fatal error

led mike18-Nov-08 4:31

led mike

18-Nov-08 4:31

MsmVc wrote:
Plz help me

Sure why not. If you don't know how include files work then you need better study material for learning how to program in C/C++. You are using one or more books that are introductions to C/C++ to learn from yes?

led mike

SNI17-Nov-08 22:45

SNI

17-Nov-08 22:45

Hi,
I have a application that communicates with server (Java) and communication is done using SOAP. I am able to communicate properly as much as I can in DEBUG mode but the same code is not running in RELEASE mode.
There is one function (freememory(PBYTE&)) which we are calling to free the memory. this works fine in DEBUG mode but not in RELEASE. if I put message box in this function then it is working fine.

Please suggest I do not want to use messge box.

Thanks
SNI

SNI

Re: Code not ruuning in Release but runs in Debug

Hamid_RT17-Nov-08 23:34

Re: Code not ruuning in Release but runs in Debug

17-Nov-08 23:34

See Debugging Release Mode Problems[^]. Wink | ;)

David Crow18-Nov-08 3:40

David Crow

18-Nov-08 3:40

SNI wrote:
I am able to communicate properly as much as I can in DEBUG mode but the same code is not running in RELEASE mode.

See here.

"Love people and use things, not love things and use people." - Unknown

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

OnDraw() not getting called

manoharbalu17-Nov-08 22:13

manoharbalu

17-Nov-08 22:13

void CTestView::OnPaint()
{
CPaintDC dc(this); // device context for painting
Invalidate(FALSE);
}
void CTestView::OnDraw(CDC* pDC)
{
CTestDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
// TODO: add draw code for native data here

CFont font;
font.CreatePointFont(20, "Garamond");
CFont *pFont = pDC->SelectObject(&font);
pDC->TextOut(20, 18, "Christine", 9);
pDC->SelectObject(pFont);
font.DeleteObject();
}

In the above code, even though I am calling Invalidate inside OnPaint(), it is not getting inside the OnDraw(). Pls suggest me some ways how to get inside OnDraw()

Hamid_RT17-Nov-08 23:40

17-Nov-08 23:40

HWND Hwnd = GetSafeHwnd();
::SendMessage(Hwnd , WM_PAINT, 0,0);

?

manoharbalu17-Nov-08 23:52

manoharbalu

17-Nov-08 23:52

How can this call OnDraw(). Pls Explain... Also Tell me where to include your code

Hamid_RT18-Nov-08 0:47

18-Nov-08 0:47

If you send PAINT message in your CTestView class windows can call OnDraw(CDC* pDC).

Nishad S18-Nov-08 1:57

Nishad S

18-Nov-08 1:57

Why are you mapping the OnPaint?

See the MFC code of CView

void CView::OnPaint()
{
	// standard paint routine
	CPaintDC dc(this);
	OnPrepareDC(&dc);
	OnDraw(&dc);
}

It is calling the OnDraw. So you should not map OnPaint.

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[ODBaseBtn]