119.win32 window principle

1#include <Windows.h>2 3 //callback function for handling messages4 LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM);5 6 intWINAPI WinMain (hinstance hinstance, hinstance hpreinstance, PSTR szCmdLine,inticmdshow)7 {8     //set the name of the window9     StaticTCHAR szappname[ -] = TEXT ("Mywindow");Ten      One     //window class A wndclass wndclass; -     //style -Wndclass.style = Cs_hredraw |Cs_vredraw; theWndclass.lpszclassname = Szappname;//Set name -Wndclass.lpszmenuname =NULL; -Wndclass.hbrbackground = (hbrush) getstockobject (White_brush);//Set Background -Wndclass.lpfnwndproc = WndProc;//Setting the Callback Function processing window +Wndclass.cbclsextra = Wndclass.cbwndextra =0;//Expand -Wndclass.hinstance = hinstance;//window Handle +Wndclass.hicon = LoadIcon (NULL, idi_application);//load Icon AWndclass.hcursor = LoadCursor (NULL, Idc_arrow);//Load Mouse Style at  -     //by name, register window -     if(! RegisterClass (&wndclass)) -     { -MessageBoxA (0,"Window registration failed","Tips",0); -         return 0; in     } -      to     //Create a window by name +HWND hwnd = CreateWindow (Szappname,//window name -TEXT ("window"),//Window Title theWs_overlappedwindow,//window Style *Cw_usedefault,//default display position x $Cw_usedefault,//default display position yPanax NotoginsengCw_usedefault,//Default Width -Cw_usedefault,//Default Height theNull//child window +Null//Sub-menu AHINSTANCE,//window Handle the NULL); +  - ShowWindow (hwnd, sw_show); $UpdateWindow (HWND);//Display and update $MSG msg;//message -     //message loop (GetMessage Create event TranslateMessage dispatchmessage response event) -      while(GetMessage (&msg,null,0,0)) the     { -TranslateMessage (&msg);Wuyi         //Call callback function theDispatchMessage (&msg); -     } Wu  -     returnMsg.wparam; About } $  - LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM WPARAM, LPARAM LPARAM) - { -     //Equipment Environment A HDC hdc; + paintstruct PS; the rect rect; -     Switch(message) $     { the      CaseWm_lbuttondown: theMessageBoxA (0,"press the left mouse button","Tips",0); the          Break; the      CaseWm_rbuttondown: -MessageBoxA (0,"press the left mouse button","Tips",0); in          Break; the      CaseWm_close: the         if(MessageBoxA (0,"whether to close the window","Tips",1) ==1) About         { the             //Close window, send Wm_destroy message the DestroyWindow (HWND); the         } +         Else -         { the             return 0;Bayi         } the          Break; the      CaseWm_destroy: -MessageBoxA (0,"was successfully closed","Tips",0); -Exit0); the          Break; the     default: the          Break; the     } -     returnDefWindowProc (hwnd, message, wparam, lparam); the}

119.win32 window principle