MFC-自定义控件

在对话框程序中使用。

ref.1

1. 资源管理其中，拖拽自定义控件到对话框中
2. 右键菜单创建 class，继承至 CWnd
3. 比较重要的一步，需要注册自定义的控件，并且必须在构造函数里面注册

#define WNDCLASS_NAME (L"CCanvas")

BOOL CCanvas::RegisterWndClass()
{
	WNDCLASS windowclass;
	HINSTANCE hInst = AfxGetInstanceHandle();

	//Check weather the class is registerd already
	if (!(::GetClassInfo(hInst, WNDCLASS_NAME, &windowclass)))
	{
		//If not then we have to register the new class
		windowclass.style = CS_DBLCLKS;// | CS_HREDRAW | CS_VREDRAW;
		windowclass.lpfnWndProc = ::DefWindowProc;
		windowclass.cbClsExtra = windowclass.cbWndExtra = 0;
		windowclass.hInstance = hInst;
		windowclass.hIcon = NULL;
		windowclass.hCursor = AfxGetApp()->LoadStandardCursor(IDC_ARROW);
		windowclass.hbrBackground = ::GetSysColorBrush(COLOR_WINDOW);
		windowclass.lpszMenuName = NULL;
		windowclass.lpszClassName = WNDCLASS_NAME;

		if (!AfxRegisterClass(&windowclass))
		{
			AfxThrowResourceException();
			return FALSE;
		}
	}

	return TRUE;
}

CCanvas::CCanvas()
{
	RegisterWndClass();
}

4. 绑定类和自定义控件。右键单击-属性-class 里面填写类定义里面的 “CCanvas”
5. 数据绑定，在对话框主程序中添加

CCanvas m_canvas;//This is our custom control

void CdrawDemoDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialogEx::DoDataExchange(pDX);
	DDX_Control(pDX, IDC_STATIC_FRAME, m_ctrl_draw);
	DDX_Control(pDX, IDOK, m_btn_ok);
	DDX_Control(pDX, IDC_CUSTOM1, m_canvas);
}