#include "stdafx.h"//#include <gl/glut.h>//#include <iostream>#include <cmath>#include <Windows.h>using namespace std;inline int round(float val) {return int(val+0.5);}//inline void SetPixel(int x,int y){glBegin(GL_POINTS);glVertex2i(x,y);glEnd();}void lineDDA(int x0,int xEnd,int y0,int yEnd);int _tmain(int argc, _TCHAR* argv[]){lineDDA(100,400,200,400);//控制台窗口的左上角为（0,0）lineDDA(100,400,100,400);system("pause");return 0;}void lineDDA(int x0,int xEnd,int y0,int yEnd){HWND hWnd=GetConsoleWindow(); //获得控制台窗口的句柄 HDC hDC=GetWindowDC(hWnd);//通过窗口句柄得到该窗口的设备场境句柄 int dx,dy,steps,k;float xIncrease,yIncrease,x=x0,y=y0;dx=xEnd-x0;dy=yEnd-y0;if (fabs((float)dx)>fabs((float)dy))steps=dx;elsesteps=dy;xIncrease=(float)dx/(float)steps;yIncrease=(float)dy/(float)steps;SetPixel(hDC,round(x),round(y),RGB(255,0,0));for (k=0;k<steps;++k){x+=xIncrease;y+=yIncrease;SetPixel(hDC,round(x),round(y),RGB(255,0,0));}}#include "stdafx.h"#include<windows.h>int main( void ){HWND hWnd=GetConsoleWindow();// 获取一个可供画图的DC，我这里就直接用桌面算了//HDC hdc = GetWindowDC( GetDesktopWindow() );HDC hdc=GetWindowDC(hWnd);// 创建红色、1像素宽度的实线画笔HPEN hpen1 = CreatePen( PS_SOLID, 1, RGB(255,0,0) );// 创建绿色、5像素宽度的破折画笔，如果你想创建其他种类的画笔请参阅MSDNHPEN hpen2 = CreatePen( PS_DASH, 5, RGB(0,255,0) );// 创建一个实体蓝色画刷HBRUSH hbrush1 = CreateSolidBrush( RGB(0,0,255) );// 创造一个透明的画刷，如果你想创建其他种类的画刷请参阅MSDNHBRUSH hbrush2 = (HBRUSH)GetStockObject( NULL_BRUSH );// 将hpen1和hbrush1选进HDC，并保存HDC原来的画笔和画刷HPEN hpen_old = (HPEN)SelectObject( hdc, hpen1 );HBRUSH hbrush_old = (HBRUSH)SelectObject( hdc, hbrush1 );// 在(40,30)处画一个宽200像素，高50像素的矩形Rectangle( hdc, 40, 30, 40+200, 30+50 );// 换hpen1和hbrush1，然后在(40,100)处也画一个矩形，看看有何差别SelectObject( hdc, hpen2 );SelectObject( hdc, hbrush2 );Rectangle( hdc, 40, 100, 40+200, 100+50 );// 画个椭圆看看Ellipse( hdc, 40, 200, 40+200, 200+50 );// 画个(0,600)到(800,0)的直线看看MoveToEx( hdc, 0, 600, NULL );LineTo( hdc, 800, 0 );// 在(700,500)处画个黄点，不过这个点只有一像素大小，你细细的看才能找到SetPixel( hdc, 700, 500, RGB(255,255,0) );// 恢复原来的画笔和画刷SelectObject( hdc, hpen_old );SelectObject( hdc, hbrush_old );return 0;}
