VC plotting tools, colors, and plotting Functions

1. Paint Brush

There are two ways to create a paint brush

First, call the getstockobject () function directly.

Second, you can call it by creating a paint brush.

Hpen createpen (
Int Fnpenstyle , // Pen style
Int Nwidth , // Pen width
Colorref Crcolor // Pen color
);

After creating a paint brush, you must call the SelectObject function to select the device environment;

You can use the deleteobject function to delete a paint brush;

2. Image painter

Create a paint brush

First, call the getstockobject function.

The second is to create a paint brush by calling createsolidbrush and createhatchbrush.

   hbrush createsolidbrush (colorref   crcolor  // brush color value  );   

Hbrush createhatchbrush (intFnstyle,// Hatch StyleColorrefClrref// Color value); 
 

 
3. Color
 

Implemented through RGB functions;
 

 
4. Commonly Used plotting Functions
 

 
Sets the current position of the paint brush function movetoex.
 

   bool movetoex (HDC   HDC  , // handle to device context  int   x  , // X-coordinate of New Current Position  int   Y  , // y-coordinate of New Current Position lppoint // pointer to old current position );   

  the lineto function that draws a straight line from the current position to the specified coordinate point  

   bool lineto (HDC   HDC  , // device context handle  int   nxend  , // X-coordinate of line's ending point  int   nyend  // y-coordinate of line's ending point  );   

    Start from the current position and use a line segment to connect to the polyline function of each point specified in lppoints  

   bool polyline (HDC   HDC  , // handle to device context  const point   * lppt  ,  // pointer to array containing endpoints  int   cpoints  // number of points in the array  );   

Elliptical Arc
 

 Bool arc (HDC  HDC  , // Handle to device context Int  Nleftrect  , // X-coord of bounding rectangle's upper-left corner Int  Ntoprect , // Y-coord of bounding rectangle's upper-left corner Int  Nrightrect  , // X-coord of bounding rectangle's lower-right corner Int  Nbottomrect  , // Y-coord of bounding rectangle's lower-right corner Int  Nxstartarc  , // First radial ending pointInt  Nystartarc  , // First radial ending point Int  Nxendarc  , // Second radial ending point Int  Nyendarc // Second radial ending point );  

Draw a pie chart and fill the pie with the current paint brush
 

 Bool pie (HDC  HDC  , // Handle to device context Int  Nleftrect  , // X-coord of bounding rectangle's upper-left corner Int  Ntoprect , // Y-coord of bounding rectangle's upper-left corner Int  Nrightrect  , // X-coord of bounding rectangle's lower-right corner Int  Nbottomrect  , // Y-coord of bounding rectangle's lower-right corner Int  Nxradial1  , // X-coord of first radial's endpointInt  Nyradial1  , // Y-coord of first radial's endpoint Int  Nxradial  , // X-coord of second radial's endpoint Int  Nyradial // Y-coord of second radial's endpoint );   

Draw a rectangle and fill the rectangle
 

 Bool rectangle (HDC  HDC  , // Handle to device context Int  Nleftrect  , // X-coord of bounding rectangle's upper-left corner Int  Ntoprect , // Y-coord of bounding rectangle's upper-left corner Int  Nrightrect  , // X-coord of bounding rectangle's lower-right corner Int  Nbottomrect // Y-coord of bounding rectangle's lower-right corner );  

 
Draw an ellipse and fill Ellipse
 

Bool ellipse (HDC  HDC  , // Handle to device context Int  Nleftrect  , // X-coord of bounding rectangle's upper-left corner Int  Ntoprect  , // Y-coord of bounding rectangle's upper-left corner Int  Nrightrect , // X-coord of bounding rectangle's lower-right corner Int  Nbottomrect // Y-coord of bounding rectangle's lower-right corner );  

 
Draw a polygon and fill it with polygon
 

   bool polygon (HDC   HDC  , // handle to device context  const point   * lppoints  ,  // pointer to Polygon's vertices  int   ncount  // count of Polygon's vertices  );   

  the invalidaterect function is used to refresh the user zone (to make the region invalid)