Programming Windows Programming Guide-> Chapter 5 example program 4

/*_##################################### #######################################
_##
### Programming Windows Programming Design Guide-> Chapter 5 example program 4
_ ## Author: xwlee
_ ## Time: 2007.06.19
### Chang'an University
_ ## Development condition: win2003 SERVER + vc6.0
_##
_ ## Program 5-4 altwind
_ ## Altwind. c file
### Images in the internal area
_ ## The program is only for verification
_##
_##
_ ## Altwind. c -- alternate and winding fill Modes
_ ## (C) Charles Petzold, 1998
_##
_####################################### ###################################*/

# Include <windows. h>

Lresult callback wndproc (hwnd, uint, wparam, lparam );

Int winapi winmain (hinstance, hinstance hprevinstance,

Pstr szcmdline, int icmdshow)

{

Static tchar szappname [] = text ("altwind ");

Hwnd;

MSG;

Wndclass;

Wndclass. Style = cs_hredraw | cs_vredraw;

Wndclass. lpfnwndproc = wndproc;

Wndclass. cbclsextra = 0;

Wndclass. cbwndextra = 0;

Wndclass. hinstance = hinstance;

Wndclass. hicon = loadicon (null, idi_application );

Wndclass. hcursor = loadcursor (null, idc_arrow );

Wndclass. hbrbackground = (hbrush) getstockobject (white_brush );

Wndclass. lpszmenuname = NULL;

Wndclass. lpszclassname = szappname;

If (! Registerclass (& wndclass ))

{

MessageBox (null, text ("program requires Windows NT! "),

Szappname, mb_iconerror );

Return 0;

}

Hwnd = createwindow (szappname, text ("alternate and winding fill Modes "),

Ws_overlappedwindow,

Cw_usedefault, cw_usedefault,

Cw_usedefault, cw_usedefault,

Null, null, hinstance, null );

Showwindow (hwnd, icmdshow );

Updatewindow (hwnd );

While (getmessage (& MSG, null, 0, 0 ))

{

Translatemessage (& MSG );

Dispatchmessage (& MSG );

}

Return msg. wparam;

}

 

Lresult callback wndproc (hwnd, uint message, wparam, lparam)

{

Static point aptfigure [10] = {10, 70, 50, 70, 50, 10, 90, 10, 90, 50,

30,50, 30,90, 70,90, 70,30, 10,30 };

Static int cxclient, cyclient;

HDC;

Int I;

Paintstruct pS;

Point apt [10];

Switch (Message)

{

Case wm_size:

Cxclient = loword (lparam );

Cyclient = hiword (lparam );

Return 0;

 

Case wm_paint:

HDC = beginpaint (hwnd, & PS );

 

SelectObject (HDC, getstockobject (gray_brush ));

 

For (I = 0; I <10; I ++)

{

APT [I]. x = cxclient * aptfigure [I]. X/200;

APT [I]. Y = cyclient * aptfigure [I]. Y/100;

}

 

Setpolyfillmode (HDC, alternate );

Polygon (HDC, APT, 10 );

 

For (I = 0; I <10; I ++)

{

APT [I]. x + = cxclient/2;

}

 

Setpolyfillmode (HDC, winding );

Polygon (HDC, APT, 10 );

Endpaint (hwnd, & PS );

Return 0;

Case wm_destroy:

Postquitmessage (0 );

Return 0;

}

Return defwindowproc (hwnd, message, wparam, lparam );

}