访问越界的问题

[uestcryx]

vc写的代码。。。。运行时告知unhandled exception in Test.exe:OxC0000005:Access Violation。。采用断点找到错误的位置是：

CButton*pBtn2=(CButton*)GetDlgItem(hWnd,IDC_ROUTINGTABLE);

请高手指教下。、、、、

[quwei197874]

内存乱了，查查是哪里赋值时出问题，不一定是这里的错误

[Dreadnought]

GetDlgItem你用错了把
CWnd::GetDlgItem 只有
CWnd* GetDlgItem(
int nID
) const;
void GetDlgItem(
int nID,
HWND* phWnd
) const;

应该是CButton*pBtn2=(CButton*)GetDlgItem(IDC_ROUTINGTABLE);

[小米小]

e ewerf

[Dreadnought]

[Quote=引用 2 楼 huangcheng90 的回复:]

GetDlgItem你用错了把
CWnd::GetDlgItem 只有
CWnd* GetDlgItem(
int nID
) const;
void GetDlgItem(
int nID,
HWND* phWnd
) const;

应该是CButton*pBtn2=(CButton*)GetDlgItem(IDC_ROUTINGTABLE);
[/Quote]
如果你要调用API, 类似如下

	HWND hBtn = NULL;
	hBtn = ::GetDlgItem(this->m_hWnd, IDC_BUTTON_TEST);
	ASSERT(hBtn != NULL);
	CButton *pButton = new CButton();
        pButton->Attach(hBtn);
	pButton->EnableWindow(FALSE);
	pButton->Detach();
	delete pButton;