Rotating windmill VC ++ instance code (Win32 Application)

Rotating windmill-VC ++ instance code (Win32 Application)

// The source code is as follows:
# Include <windows. h>
# Include <stdlib. h>
# Include <string. h>
# Include <math. h>
# Define PI 3.1415926

Int nnum = 0, nmaxnum = 20;

Lresult callback windowproc (
Hwnd, // handle to window
Uint umsg, // message identifier
Wparam, // first Message Parameter
Lparam // second Message Parameter
);
Int winapi winmain (
Hinstance, // handle to current instance
Hinstance hprevinstance, // handle to previous instance
Lpstr lpcmdline, // command line
Int ncmdshow // show state
)

{
Hwnd;
MSG;
Wndclass;
Wndclass. cbclsextra = 0;
Wndclass. cbwndextra = 0;
Wndclass. hbrbackground = (hbrush) getstockobject (white_brush );
Wndclass. hcursor = loadcursor (null, idc_arrow );
Wndclass. hicon = loadicon (null, idi_application );
Wndclass. hinstance = hinstance;
Wndclass. lpfnwndproc = windowproc;
Wndclass. lpszclassname = "ABC ";
Wndclass. lpszmenuname = NULL;
Wndclass. Style = 0;

Registerclass (& wndclass );

Hwnd = createwindow ("ABC", "Rotating windmill", ws_overlappedwindow, cw_usedefault, 0,600,450, null, null, hinstance, null );

Showwindow (hwnd, sw_shownormal );
Updatewindow (hwnd );

While (getmessage (& MSG, hwnd, null, 0 ))
{
Translatemessage (& MSG );
Dispatchmessage (& MSG );
}
Return 0;
}

Lresult callback windowproc (
Hwnd, // handle to window
Uint umsg, // message identifier
Wparam, // first Message Parameter
Lparam // second Message Parameter
)
{
HDC;
Hbrush;
Hpen HP;
Paintstruct pS;
Int ncenterx, ncentery;
Double fangle;

Switch (umsg)
{
Case wm_paint:
HDC = beginpaint (hwnd, & PS );
Setmapmode (HDC, mm_anisotropic );
Setwindowextex (HDC, 400,300, null );
Setviewportextex (HDC, 600,450, null );
Setviewportorgex (HDC, 300,200, null );

// Draw the outer circle
HP = createpen (ps_solid, 1, RGB (255, 0, 255 ));
SelectObject (HDC, HP );
Ellipse (HDC,-100,-100,100,100 );

// Draw the blade of the windmill
// Draw a red Blade
Hbrush = createsolidbrush (RGB (255, 0, 0 ));
SelectObject (HDC, hbrush );
Fangle = 2 * PI/nmaxnum * nnum;
Ncenterx = (INT) (50 * Cos (fangle ));
Ncentery = (INT) (50 * sin (fangle ));
Pie (HDC, nCenterX-50, nCenterY-50, ncenterx + 50, ncentery + 50, (INT) (ncenterx + 50 * Cos (fangle), (INT) (ncentery + 50 * sin (fangle), (INT) (ncenterx + 50 * Cos (fangle + PI), (INT) (ncentery + 50 * sin (fangle + PI )));

// Draw the blue Blade
Hbrush = createsolidbrush (RGB (255,255, 0 ));
SelectObject (HDC, hbrush );
Ncenterx = (INT) (50 * Cos (fangle + 2 * PI/3 ));
Ncentery = (INT) (50 * sin (fangle + 2 * PI/3 ));
Pie (HDC, nCenterX-50, nCenterY-50, ncenterx + 50, ncentery + 50, (INT) (ncenterx + 50 * Cos (fangle + 2 * PI/3), (INT) (ncentery + 50 * sin (fangle + 2 * PI/3), (INT) (ncenterx + 50 * Cos (fangle + PI + 2 * PI/3 )), (INT) (ncentery + 50 * sin (fangle + PI + 2 * PI/3 )));

// Draw a yellow Blade
Hbrush = createsolidbrush (RGB (0,255,255 ));
SelectObject (HDC, hbrush );
Ncenterx = (INT) (50 * Cos (fangle + 4 * PI/3 ));
Ncentery = (INT) (50 * sin (fangle + 4 * PI/3 ));
Pie (HDC, nCenterX-50, nCenterY-50, ncenterx + 50, ncentery + 50, (INT) (ncenterx + 50 * Cos (fangle + 4 * PI/3), (INT) (ncentery + 50 * sin (fangle + 4 * PI/3), (INT) (ncenterx + 50 * Cos (fangle + PI + 4 * PI/3 )), (INT) (ncentery + 50 * sin (fangle + PI + 4 * PI/3 )));

Nnum ++;
Sleep (100 );
Invalidaterect (hwnd, null, 1 );
Endpaint (hwnd, & PS );

Return 0;
Case wm_close:
Postquitmessage (0 );
Break;
Default:
Return defwindowproc (hwnd, umsg, wparam, lparam );
}
Return 0;
}

Rotating windmill-VC ++ instance code (Win32 Application)

// The source code is as follows:
# Include <windows. h>
# Include <stdlib. h>
# Include <string. h>
# Include <math. h>
# Define PI 3.1415926

Int nnum = 0, nmaxnum = 20;

Lresult callback windowproc (
Hwnd, // handle to window
Uint umsg, // message identifier
Wparam, // first Message Parameter
Lparam // second Message Parameter
);
Int winapi winmain (
Hinstance, // handle to current instance
Hinstance hprevinstance, // handle to previous instance
Lpstr lpcmdline, // command line
Int ncmdshow // show state
)

{
Hwnd;
MSG;
Wndclass;
Wndclass. cbclsextra = 0;
Wndclass. cbwndextra = 0;
Wndclass. hbrbackground = (hbrush) getstockobject (white_brush );
Wndclass. hcursor = loadcursor (null, idc_arrow );
Wndclass. hicon = loadicon (null, idi_application );
Wndclass. hinstance = hinstance;
Wndclass. lpfnwndproc = windowproc;
Wndclass. lpszclassname = "ABC ";
Wndclass. lpszmenuname = NULL;
Wndclass. Style = 0;

Registerclass (& wndclass );

Hwnd = createwindow ("ABC", "Rotating windmill", ws_overlappedwindow, cw_usedefault, 0,600,450, null, null, hinstance, null );

Showwindow (hwnd, sw_shownormal );
Updatewindow (hwnd );

While (getmessage (& MSG, hwnd, null, 0 ))
{
Translatemessage (& MSG );
Dispatchmessage (& MSG );
}
Return 0;
}

Lresult callback windowproc (
Hwnd, // handle to window
Uint umsg, // message identifier
Wparam, // first Message Parameter
Lparam // second Message Parameter
)
{
HDC;
Hbrush;
Hpen HP;
Paintstruct pS;
Int ncenterx, ncentery;
Double fangle;

Switch (umsg)
{
Case wm_paint:
HDC = beginpaint (hwnd, & PS );
Setmapmode (HDC, mm_anisotropic );
Setwindowextex (HDC, 400,300, null );
Setviewportextex (HDC, 600,450, null );
Setviewportorgex (HDC, 300,200, null );

// Draw the outer circle
HP = createpen (ps_solid, 1, RGB (255, 0, 255 ));
SelectObject (HDC, HP );
Ellipse (HDC,-100,-100,100,100 );

// Draw the blade of the windmill
// Draw a red Blade
Hbrush = createsolidbrush (RGB (255, 0, 0 ));
SelectObject (HDC, hbrush );
Fangle = 2 * PI/nmaxnum * nnum;
Ncenterx = (INT) (50 * Cos (fangle ));
Ncentery = (INT) (50 * sin (fangle ));
Pie (HDC, nCenterX-50, nCenterY-50, ncenterx + 50, ncentery + 50, (INT) (ncenterx + 50 * Cos (fangle), (INT) (ncentery + 50 * sin (fangle), (INT) (ncenterx + 50 * Cos (fangle + PI), (INT) (ncentery + 50 * sin (fangle + PI )));

// Draw the blue Blade
Hbrush = createsolidbrush (RGB (255,255, 0 ));
SelectObject (HDC, hbrush );
Ncenterx = (INT) (50 * Cos (fangle + 2 * PI/3 ));
Ncentery = (INT) (50 * sin (fangle + 2 * PI/3 ));
Pie (HDC, nCenterX-50, nCenterY-50, ncenterx + 50, ncentery + 50, (INT) (ncenterx + 50 * Cos (fangle + 2 * PI/3), (INT) (ncentery + 50 * sin (fangle + 2 * PI/3), (INT) (ncenterx + 50 * Cos (fangle + PI + 2 * PI/3 )), (INT) (ncentery + 50 * sin (fangle + PI + 2 * PI/3 )));

// Draw a yellow Blade
Hbrush = createsolidbrush (RGB (0,255,255 ));
SelectObject (HDC, hbrush );
Ncenterx = (INT) (50 * Cos (fangle + 4 * PI/3 ));
Ncentery = (INT) (50 * sin (fangle + 4 * PI/3 ));
Pie (HDC, nCenterX-50, nCenterY-50, ncenterx + 50, ncentery + 50, (INT) (ncenterx + 50 * Cos (fangle + 4 * PI/3), (INT) (ncentery + 50 * sin (fangle + 4 * PI/3), (INT) (ncenterx + 50 * Cos (fangle + PI + 4 * PI/3 )), (INT) (ncentery + 50 * sin (fangle + PI + 4 * PI/3 )));

Nnum ++;
Sleep (100 );
Invalidaterect (hwnd, null, 1 );
Endpaint (hwnd, & PS );

Return 0;
Case wm_close:
Postquitmessage (0 );
Break;
Default:
Return defwindowproc (hwnd, umsg, wparam, lparam );
}
Return 0;
}