[C/++] Draw a Square (SetPixel)

[Guest GoSu.SpeeD]

Here is an example i coded for a friend to show him how to draw a square on your desktop.

/*  Example of using setpixel to draw a square on your desktop 

    By GoSu.SpeeD/Akimoko/Shoxin/Encrypt. and many other aliases

    

    compile: gcc.exe square.c -o square.exe -lgdi32

*/


#include <windows.h>


int main()

{

    int x = 729; // X co-ord. to start at

    int y = 507; // Y co-ord. to start at

    

    int r = 255; // RGB VALUE FOR WHITE

    int g = 255; // RGB VALUE FOR WHITE

    int b = 255; // RGB VALUE FOR WHITE

    

    int XCount = 0;

    int YCount = 0;

    

    HDC Hdc = GetDC(HWND_DESKTOP); // Retrieve a handle for our desktop

    sleep(5000); // Give our user time to minimize and switch to the desktop


    while(1)

    {

        SetPixel(Hdc, x++, y, RGB (r, g, b)); // Increasing pixel length every loop

        sleep(1);

        XCount++;

        

        if (XCount == 100) // When we have a line 100 pixels in width

        {

            while(1)

            {

                SetPixel(Hdc, x, y++, RGB (r, g, b));

                sleep(1);

                YCount++;

                

                if (YCount == 100) // When we have a line with 100 pixels in height

                {

                    while(1)

                    {       

                        SetPixel(Hdc, x--, y, RGB (r, g, b)); // Going back toward the original X Co-ord

                        sleep(1);

                        XCount--;

                        

                        if (XCount == 0) // When our we return to the same X Co-ord

                        {

                            while(1)

                            {       

                                SetPixel(Hdc, x, y--, RGB (r, g, b));

                                sleep(1);

                                YCount--;

                                

                                if (YCount == 0) // Complete the Square

                                {

                                    sleep(5000); // wait 5 seconds so the user can see the results

                                    ReleaseDC (HWND_DESKTOP, Hdc); // Release Device Content

                                    return 0;

                                }

                            }

                        }

                    }

                }

            }

        }

    }        

}