繪圖基礎--畫筆

繪圖基礎--畫筆

// line2.cpp

#include <afxwin.h>

// Define the application class
class CApp : public CWinApp
{
public:
	virtual BOOL InitInstance();
};

CApp App;  

// define the window class
class CWindow : public CFrameWnd
{ 
public:
	CWindow(); 
	void OnPaint();
	DECLARE_MESSAGE_MAP()
};

// The window's constructor
CWindow::CWindow()
{ 
	Create(NULL, "Drawing Tests",
		WS_OVERLAPPEDWINDOW,
		CRect(0,0,500,300)); 
}

// The message map
BEGIN_MESSAGE_MAP( CWindow, CFrameWnd )
	ON_WM_PAINT()	
END_MESSAGE_MAP()

// Handle exposure events
void CWindow::OnPaint()
{
	CRect rect;
	int x;

	GetClientRect( rect );
	CPaintDC dc(this);
	
	// 創建畫筆(實線，2像素，藍色)
	CPen pen(PS_SOLID, 2, RGB(0,0,255)), *oldPen;
	oldPen = dc.SelectObject(&pen);		
	
	// 畫線
	for (x=0; x<rect.Width(); x+=10)
	{
		dc.MoveTo(0,0);
		dc.LineTo(x,rect.Height());
	}

	// Return old pen;
	dc.SelectObject(oldPen);
}

// Init the application
BOOL CApp::InitInstance()
{
	m_pMainWnd = new CWindow();
	m_pMainWnd->ShowWindow(m_nCmdShow);
	m_pMainWnd->UpdateWindow();
	return TRUE;
}