The first lesson of EasyX learning

RGB( The red part , The green part , The blue part ）

1. The value of each color is from 0~255

initgraph(int width,int height,int flag=NULL) Used to initialize the drawing window ( create a window )
2. width Specifies the width of the window
3. height Specifies the height of the window
4. flag The style of the window , The default is NULL SHOWCONSOLE Display console NOCLOSE No close button NOMINIMIZE There is no zoom out button

closegraph(); Close the drawing window
cleardevice(); Empty the drawing device
Drawing functions can be divided into three types in terms of filling : No filling , Filled with borders , Borderless fill
Take drawing a circle as an example :

1. circle() No filling
2. fillcircle() Filled with borders
3. solidcircle() Borderless fill

From the shape , Commonly used can be divided into eight kinds

circle A circle	ellipse Drawing ellipse	pie Draw fan	polygon Draw a polygon
rectangle Draw a rectangular	roundrect Draw a rounded rectangle	line Draw line	putpixel Draw a dot

Set fill color setfillcolor( Color )
Set the line color setlinecolor( Color )
Set line style setlinestyle( Height , Width , typeface )
outtextxy(int x,int y,LPCTSRT str) Output the string at the specified position
settextcolor(COLORREF color) Sets the current text color
settextstyle(int nHeight,int nWidth,LPCTSTR ipszFace) Set the text style

• nHeight Specifies the height
• nWidth The average width of characters . If the proportion is 0, Automatically adapt
• ipszFace Font name

setbkmode(TRANSPARENT); Can make the text and graphics coincide