Windows Programming Self-study: adding Icon Resources

1#include <windows.h>2#include"resource.h"3 4LRESULT CALLBACK Mywndproc (HWND hwnd,//Handle to Window5UINT umsg,//message identifier6WPARAM WPARAM,//First message parameter7LPARAM LPARAM//Second message parameter8   );9 Ten intWINAPI WinMain (hinstance hinstance, hinstance hprevinstance, LPSTR lpCmdLine,intnshowcmd) One { ATCHAR szappname[] = TEXT ("Icondemo"); - wndclass wnd; - HWND hwnd; the msg msg; -Wnd.style = Cs_hredraw | Cs_vredraw;//The horizontal or vertical change window is redrawn with Mywndproc's WM_PAINT message Association -Wnd.lpfnwndproc =Mywndproc; -Wnd.cbclsextra =0; +Wnd.cbwndextra =0; -Wnd.hicon =LoadIcon (hinstance, Makeintresource (Idi_icon)); +Wnd.hcursor =loadcursor (NULL, idc_arrow); AWnd.hbrbackground =(Hbrush) getstockobject (White_brush); atWnd.lpszmenuname =NULL; -Wnd.lpszclassname = Szappname;//window class identifier, used in the first parameter of CreateWindow -Wnd.hinstance =hinstance; -     if(! RegisterClass (&wnd)) -     { -MessageBox (NULL, TEXT ("Unable to create window"), TEXT ("ERROR"), mb_ok|mb_iconerror); in         return 0; -     } to      +hwnd = CreateWindow (Szappname, TEXT ("Hello"), Ws_overlappedwindow, Cw_usedefault, Cw_usedefault, Cw_usedefault, cw_usedefault, NULL, NULL, HINSTANCE, NULL);//The second argument is a window caption - ShowWindow (hwnd, nshowcmd); the UpdateWindow (HWND); *      while(GetMessage (&msg, NULL,0,0)) $     {Panax NotoginsengTranslateMessage (&msg); -DispatchMessage (&msg); the     } +     return 0; A } the  + LRESULT CALLBACK Mywndproc (HWND hwnd, UINT umsg, WPARAM WPARAM, LPARAM LPARAM) - { $HDC hdc;//defining a device environment handle $Paintstruct PS;//Drawing Structures -  -     StaticHicon Hicon; the     Static intCxicon, Cyicon, Cxclient, cyclient; - hinstance hinstance;Wuyi     intx, y; the  -     Switch(umsg) Wu     { -  About      Casewm_create: $     { -HINSTANCE = ((lpcreatestruct) lParam)->hinstance;//The lparam parameter of the WM_CREATE message is a pointer to a CREATESTRUCT structure that contains hinstance. -Hicon =LoadIcon (hinstance, Makeintresource (Idi_icon)); -Cxicon = GetSystemMetrics (Sm_cxicon);//get icon size, previous LoadIcon Association ACyicon =GetSystemMetrics (Sm_cyicon); +         return 0; the     } -      Break; $      the      CaseWM_PAINT: the     { theHDC = BeginPaint (hwnd, &PS); the          for(y =0; Y < cyclient; Y + =Cyicon) -         { in              for(x =0; x < cxclient; X + =Cxicon) the             { theDrawIcon (hdc, x, y, hicon);//Drawing About             } the              the         } theEndPaint (hwnd, &PS); +          -     } the      Break;Bayi  the      Casewm_size: the     {     -Cxclient =LoWord (lParam); -Cyclient =HiWord (lParam); the     } the      Break; the  the      CaseWm_destroy: -PostQuitMessage (0); the         return 0; the     } the 94     returnDefWindowProc (hwnd, umsg, WParam, LParam);  the}

Note: See Windows Programming version fifth, page 334