Debug assertion failed occurs while debugging

Question

3.00/5 (2 votes)

See more:

Hi,,,
while compiling im not getting any error but while debugging "debugging assertion failed" is coming ... i do no how to solve it ,,, pls help me

C#

CButton::~CButton()
{
    DestroyWindow();
}

// Helper for radio buttons
int CWnd::GetCheckedRadioButton(int nIDFirstButton, int nIDLastButton)
{
    for (int nID = nIDFirstButton; nID <= nIDLastButton; nID++)
    {
        if (IsDlgButtonChecked(nID))
            return nID; // id that matched
    }
    return 0; // invalid ID
}

// Derived class is responsible for implementing all of these handlers
//   for owner/self draw controls
void CButton::DrawItem(LPDRAWITEMSTRUCT)
{
the prob occurs here
const CString& CString::operator=(LPCTSTR lpsz)
{
ASSERT(lpsz == NULL || AfxIsValidString(lpsz));
 return TRUE;
}



BOOL CButton::OnChildNotify(UINT message, WPARAM wParam, LPARAM lParam,
    LRESULT* pResult)




<pre lang="cs">this is my call stack ,, i dono whats the problem.. if im silly ,, please forgive me ,,, pls guide me




CButton::DrawItem(tagDRAWITEMSTRUCT * 0x0012f6fc) line 72 + 25 bytes

CButton::OnChildNotify(unsigned int 43, unsigned int 1002, long 1242876, long * 0x00000000) line 84

CWnd::SendChildNotifyLastMsg(long * 0x00000000) line 2683

CWnd::ReflectLastMsg(HWND__ * 0x00840a22, long * 0x00000000) line 2721

CWnd::OnDrawItem(int 1002, tagDRAWITEMSTRUCT * 0x0012f6fc) line 1156 + 14 bytes

CWnd::OnWndMsg(unsigned int 43, unsigned int 1002, long 1242876, long * 0x0012f51c) line 1930

CWnd::WindowProc(unsigned int 43, unsigned int 1002, long 1242876) line 1585 + 30 bytes

AfxCallWndProc(CWnd * 0x0012fd98 {CComboTestDlg hWnd=???}, HWND__ * 0x001202ec, unsigned int 43, unsigned int 1002, long 1242876) line 215 + 26 bytes

AfxWndProc(HWND__ * 0x001202ec, unsigned int 43, unsigned int 1002, long 1242876) line 368

AfxWndProcBase(HWND__ * 0x001202ec, unsigned int 43, unsigned int 1002, long 1242876) line 220 + 21 bytes

USER32! 77d48709()

USER32! 77d4d297()

USER32! 77d4b743()

USER32! 77d4b7ab()

USER32! 77d605d0()

USER32! 77d761c6()

USER32! 77d5922c()

USER32! 77d5887a()

USER32! 77d48709()

USER32! 77d487eb()

USER32! 77d4c00e()

USER32! 77d4e366()

CWnd::DefWindowProcA(unsigned int 15, unsigned int 0, long 0) line 1000 + 32 bytes

CWnd::WindowProc(unsigned int 15, unsigned int 0, long 0) line 1586 + 26 bytes

AfxCallWndProc(CWnd * 0x0012fe38 {CButton hWnd=0x00840a22}, HWND__ * 0x00840a22, unsigned int 15, unsigned int 0, long 0) line 215 + 26 bytes

AfxWndProc(HWND__ * 0x00840a22, unsigned int 15, unsigned int 0, long 0) line 368

AfxWndProcBase(HWND__ * 0x00840a22, unsigned int 15, unsigned int 0, long 0) line 220 + 21 bytes

USER32! 77d48709()

USER32! 77d487eb()

USER32! 77d4b368()

USER32! 77d4b3b4()

NTDLL! 7c90e473()

USER32! 77d62719()

USER32! 77d6ec20()

USER32! 77d5fd5c()

CWnd::CreateDlgIndirect(const DLGTEMPLATE * 0x00419890, CWnd * 0x00000000 {CWnd hWnd=???}, HINSTANCE__ * 0x00400000) line 327 + 36 bytes

CDialog::DoModal() line 528 + 32 bytes

CComboTestApp::InitInstance() line 58 + 11 bytes

AfxWinMain(HINSTANCE__ * 0x00400000, HINSTANCE__ * 0x00000000, char * 0x00141eff, int 1) line 39 + 11 bytes

WinMain(HINSTANCE__ * 0x00400000, HINSTANCE__ * 0x00000000, char * 0x00141eff, int 1) line 30

WinMainCRTStartup() line 330 + 54 bytes

KERNEL32! 7c816fe7()

thanks

Posted 21-Mar-11 18:14pm

degorio

Updated 22-Mar-11 18:00pm

v5

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

LaxmikantYadav · Answer 1 · 2011-03-21T19:12:00

Solution 1

Hi Degorio,

The Problem in your DrawItem(), This function is Called by the framework when a visual aspect of an owner-drawn button has changed

Why are you using CString::operator=(LpCSTR Lpsz), If you want to set caption of button then use this

::DrawText(lpDrawItemStruct->hDC, strText, strText.GetLength(), 
      &lpDrawItemStruct->rcItem, DT_SINGLELINE|DT_VCENTER|DT_CENTER);

Check this http://msdn.microsoft.com/en-us/library/y0k9f0a4(VS.80).aspx

Posted 21-Mar-11 19:12pm

LaxmikantYadav

Comments

degorio 22-Mar-11 1:48am

still im getting the same prob

LaxmikantYadav 22-Mar-11 4:30am

Please tell me, What you want to do in DrawItem() ?

degorio 22-Mar-11 5:57am

i must change the color of the push button,i used ownerdraw button from that while debugging im recieving the "debug assertion failure"
this is my code

void CAboutDlg::OnDrawItem(int nIDCtl, LPDRAWITEMSTRUCT lpDrawItemStruct)
{
// TODO: Add your message handler code here and/or call default
CDC dc;
dc.Attach(lpDrawItemStruct->hDC); //Get device context object
CRect rt;
rt = lpDrawItemStruct->rcItem; //Get button rect

dc.FillSolidRect(rt, RGB(0, 240, 120)); //Fill button with blue color

UINT uStyle = DFCS_BUTTONPUSH;

// If drawing selected, add the pushed style to DrawFrameControl.
if (lpDrawItemStruct->itemState & ODS_SELECTED)
uStyle |= DFCS_PUSHED;

// Draw the button frame.
::DrawFrameControl(lpDrawItemStruct->hDC, &lpDrawItemStruct->rcItem,
DFC_BUTTON, uStyle);

// Get the button's text.
CString strText;
GetWindowText(strText);

// Draw the button text using the text color red.
COLORREF crOldColor = ::SetTextColor(lpDrawItemStruct->hDC, RGB(255,0,0));
::DrawText(lpDrawItemStruct->hDC, strText, strText.GetLength(),
&lpDrawItemStruct->rcItem, DT_SINGLELINE|DT_VCENTER|DT_CENTER);
::SetTextColor(lpDrawItemStruct->hDC, crOldColor);

}