cwnd.hpp

bt848,bt878 a采集卡的探测

// This class encapsulates handles

#ifndef _CWND_HPP
#define _CWND_HPP

#include <windows.h>
#include "CString.hpp"
#include "CMenu.hpp"

class CWnd {
protected:
	HWND handle;			// Handle of window
	bool IsOwner;			// If we own the handle
public:

	// Constructors
	CWnd(HWND h) : handle(h) , IsOwner(false) {}
	CWnd(CWnd& w) : handle(w.handle) , IsOwner(false) {} // Note: Ownership is not passed when copying
	CWnd() : handle((HWND)NULL) , IsOwner(false){}
	CWnd(CWnd& father,int nID) : handle(father.GetItem(nID).GetHWND()) , IsOwner(false) {}

	CWnd& operator=(CWnd& w); // note: Ownership is NOT passed when assigning!

	// To get and set Handle at runtime
	bool SetHWND(HWND h);
	bool SetHWND(CWnd& father,int nID);
	HWND GetHWND() const { return handle; }

	// To know if it is a child of us
	bool IsChild(CWnd& child) { return ::IsChild(GetHWND(),child.GetHWND()) == TRUE; }

	// To get Parent window
	CWnd GetParent() const { return CWnd( ::GetParent(GetHWND()) ); }

	// To post a message to the window
	LONG PostMessage(UINT message,WPARAM wParam,LPARAM lParam) const { return ::PostMessage(GetHWND(), message, wParam, lParam); }

	// To Send a message to the window
	LONG SendMessage(UINT message,WPARAM wParam,LPARAM lParam) const { return ::SendMessage(GetHWND(), message, wParam, lParam); }

	// To set longs
	void SetLong(UINT Idx,LONG nbr) const { ::SetWindowLong(GetHWND(),Idx,nbr);	}

	// To show/hide windows
	void Show(BOOL ShowIt=TRUE) const { ::ShowWindow(GetHWND(),ShowIt); }

	// To get an Item contained in the window
	CWnd GetItem(int nID) { return CWnd( ::GetDlgItem(GetHWND(),nID)); }

	// To set Text
	void SetText(LPTSTR Text) { ::SetWindowText(GetHWND(),Text); }
	void SetText(CString& Text) { ::SetWindowText(GetHWND(),Text.Ptr()); }

	// To get the Text
	CString GetText();

	// To create windows
	bool Create(DWORD dwExStyle, LPCTSTR ClassName, LPCTSTR WindowName, DWORD dwStyle,int x,int y,int Width,int Height,CWnd& Parent, CMenu& Menu, HINSTANCE Instance, LPVOID lpParam);

	// To check if window is open
	bool IsOpen() const { return handle != NULL; }

	// To destroy window if we own it
	bool Destroy();

	// Window destructor
	~CWnd() { Destroy(); }
};

#endif