求一个CC++图形界面程序设计，运行后能出现窗口，就行下面的代码和截图。。。 别太简单也别太复杂。。。

http://qt.nokia.com

这个东西就是楼主要的，很像很像，特别特别像。甚至更简单一些。

代码看起来像：

#include <QtGui>

int main(int argc, char *argv[])

{

QApplication a(argc, argv)//程序

QWidget w//一个窗口

QPushButton *pb=new QPushButton("I'm a QPushButton",&w)//一个按钮在窗口w里面

QObject::connect(pb,SIGNAL(clicked()),&a,SLOT(quit()))//点按钮关程序，有空的话可以用Action

w.show()//显示窗口

return a.exec()//执行

}

其他楼主看说明吧，取值、设字体什么的基本上也很像

1. 点

#include<GRAPHICS.H>

main()

{

int graphdriver=CGA

int graphmode=CGAC0,x

initgraph(&graphdriver,&graphmode," ")

cleardevice()

for (x=20x<=300x+=16)

{

putpixel(x,20,1)

putpixel(x+4,20,2)

}

getch()

closegraph()

}

2. 直线

#include<GRAPHICS.H>

void linedda(int x0,int y0,int x1,int y1,int color)

{

int x,dy,dx,y

float m

dx=x1-x0

dy=y1-y0

m=dy/dx

y=y0

for (x=x0x<=x1x++)

{

putpixel(x,(int)(y+0.5),color)

y+=m

}

}

main()

{

int a,b,c,d,e

int graphdriver=DETECT

int graphmode=0

initgraph(&graphdriver,&graphmode," ")

cleardevice()

a=0

b=0

c=200

d=300

e=2

linedda(a,b,c,d,e)

getch()

closegraph()

}

3. 圆

#include<GRAPHICS.H>

void circlepoints(int x,int y,int color)

{int m,n, xasp,yasp

float aspectratio

m=200 n=200

getaspectratio(&xasp,&yasp)

aspectratio=xasp/yasp

putpixel(x+m,y*aspectratio+n,color)

putpixel(y+m,x*aspectratio+n,color)

putpixel(-y+m,x*aspectratio+n,color)

putpixel(-x+m,y*aspectratio+n,color)

putpixel(y+m,-x*aspectratio+n,color)

putpixel(x+m,-y*aspectratio+n,color)

putpixel(-x+m,-y*aspectratio+n,color)

putpixel(-y+m,-x*aspectratio+n,color)

}

void midpointcircle(int r,int c)

{ int x,y

float d

x=0 y=r d=5.0/4-r

circlepoints(x,y,c)

while(y>x)

{if(d<=0)

d+=2.0*x+3

else

{d+=2.0*(x-y)+5

y--

}

x++

circlepoints(x,y,c)

}

}

main()

{int a,b

int graphdriver=DETECT

int graphmode=0

initgraph(&graphdriver,&graphmode," ")

cleardevice()

a=200 b=2

midpointcircle(a,b)

getch()

closegraph()

}

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