Hello-win program Getting Started Win32 basic window frame full parsing

Create a Win32 program in a vc++6.0 environment

Select the third then you can run to see Hello World.

Program parsing:

#define MAX_LOADSTRING 100 \ \ Defines the maximum word length </span>hinstance hinst;\\ The handle of the current process resource TCHAR sztitle[max_loadstring]; The caption displayed above \ \ window Tchar szwindowclass[max_loadstring];  \ \ window-defined name

In fact, the first line in front of the handle is equivalent to the ID number, each running a process requires the system to assign a code to mark it. TCHAR is a double-byte character type and char is a single byte.

This is the main program of the Win32 program equivalent to main:

int Apientry WinMain (hinstance hinstance,  //the handle of the current instance (flag) Windows is a multitasking operating system, a program can run multiple instances, in order to differentiate it Hinsta                     NCE hPrevInstance,  //handle of previous instance LPSTR lpCmdLine,//long string pointer data type, passed to WinMain command int nCmdShow)//Specifies how the window is displayed, and the application often ignores the value {. MSG msg;  //message data type Haccel hacceltable;  //stores the handle of the Keyboard accelerator key table, the keyboard accelerator key is used by the application shortcut keys such as Word under alt+f find LOADSTRING (hinstance, Ids_app_title, SzTitle, max_loadstring); Load the contents of the Ids_app_title into the string sztitle LOADSTRING (hinstance, Idc_test, Szwindowclass, max_loadstring); Load the contents of the idc_test into the string Szwindowclass MyRegisterClass (HINSTANCE);  //Registration window if (! InitInstance (HINSTANCE, nCmdShow))  //Startup window, failure program exit         {          & Nbsp;return false;  }  hacceltable = Loadaccelerators (hinstance, (LPCTSTR) IDC_TEST); Load the shortcut key table, which can be seen in the Resource VC view while (GetMessage (&msg, NULL, 0, 0))//message loop, if get exit message return 0{          & Nbsp;if (! TranslateAccelerator (msg.hWND, Hacceltable, &msg))//If it is not a shortcut, it is sent directly to the window process    {       translatemessage ( &MSG);  //translation Messages        dispatchmessage (&msg);  //Send Message to window procedure            }}return Msg.wparam;  //return Exit}

Window Registration Function：

ATOM MyRegisterClass (hinstance hinstance)//atom for unsigned short type {wndclassex Wcex; Defines a window class wcex.cbsize = sizeof (wndclassex); Window Size wcex.style= Cs_hredraw | Cs_vredraw;  Window style, with the | symbol can be selected at the same time, the specific type look at the following figure wcex.lpfnwndproc= (WNDPROC) WNDPROC;  window procedure function, below is defined wcex.cbclsextra= 0;  Additional bytes, typically 0wcex.cbwndextra= 0;  Additional bytes, generally 0wcex.hinstance= hinstance;  Instance handle wcex.hicon= LoadIcon (hinstance, (LPCTSTR) idi_test);  Window icon, can be changed in the Resource View wcex.hcursor= loadcursor (NULL, Idc_arrow);  The style of the cursor in the window wcex.hbrbackground= (hbrush) (color_window+1);  Window Paint Brush Color wcex.lpszmenuname= (LPCSTR) idc_test;  Menu Resource Name, you can change wcex.lpszclassname= Szwindowclass in the resource view;   Window class name wcex.hiconsm= LoadIcon (wcex.hinstance, (LPCTSTR) idi_small);  Window Small icon return registerclassex (&WCEX); Registry

Window style:

Startup window:

BOOL InitInstance (hinstance hinstance, int ncmdshow)  //Startup Window function, the second parameter is the startup type {   HWND hwnd; Defines the window handle (identity)   hInst = hinstance;//Store instance handle in our global variable, translated by setting the handle of the current instance of the record to the instance   hWnd = creat Ewindow (Szwindowclass, SzTitle, Ws_overlappedwindow,//Create window      cw_usedefault, 0, cw_usedefault, 0, NULL, NULL, HINSTANCE, NULL);   if (!hwnd)//Determine if the creation was successful   {      return FALSE;   }   ShowWindow (HWnd, ncmdshow);  Display window   UpdateWindow (hWnd); Refresh window   return TRUE;}

Window procedure:

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM WPARAM, LPARAM LPARAM)  //back down the System API window procedure function, followed by two parameters for message {  &N Bsp                          ,         &NB Sp                          ,         &NB Sp    //additional information int wmid, wmevent; Paintstruct PS;  //saved the window drawing information hdc hdc;  //the handle of the element in the window TCHAR szhello[max_loadstring];  //defines a double-byte string LOADSTRING (HInst, Ids_hello, Szhello, max_loadstring);  //the character in the Resource table to the Szhello variable switch (message)  //Select message {case WM_COMMAND: The message obtained when a command is selected in the  //menu Wmid = LoWord (wParam ); Wmevent = HiWord (WParam); Parse the menu Selections:switch (wmid) {case idm_about:  //About DialogBox (HInst, (LPCTSTR) Idd_aboutbox, HWnd, (DL GPROC);  //jump out of the new graphics window Break;case idm_exit:  //Exit DestroyWindow (HWND);  //Destroy Window Break;default:return DefWindowProc (hWnd, MessagE, WParam, LParam);} Break;case WM_PAINT:  //draw, the message can receive HDC = BeginPaint (hWnd, &ps) after the window is stretched, minimized, and/or todo:add any drawing code here ... RECT RT;  //defines a rectangle variable getclientrect (hWnd, &AMP;RT);  //assigns the window dimensions to the rectangle variable DrawText (hdc, Szhello, strlen (Szhello), &rt, Dt_center);  //print Szhello content on Windows                        //When you need to format in a specific location Output can be used: TextOut (hdc,1,1,buff,wsprintf (Buff,text ("Lalla%i"), AA), and I for int type                        //First to define TCHAR type output buffer array buff                & nbsp      //If forced redraw is required, InvalidateRect (hwnd,null,true);                        EndPaint (hWnd, &ps);  //finishes drawing Break;case wm_destroy:postquitmessage (0); Break;default:return defwindowproc (hWnd, message, WParam,   LParam); } return 0;} </span>

About:

LRESULT CALLBACK About (HWND hdlg, UINT message, WPARAM WPARAM, LPARAM LPARAM)//menu click About Pop-up small window {switch (message)//select message {CA  SE wm_initdialog://Add content to initialize here, default does not add return TRUE; Normal exit Case WM_COMMAND://Button Selected if (LoWord (wParam) = = IDOK | | LoWord (wParam) = = IDCANCEL)//If the point "OK" or "Cancel" {EndDialog (hdlg, LoWord (WParam));  End return TRUE; Normal exit}break;}    return FALSE; Abnormal exit}</span>

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Hello-win program Getting Started Win32 basic window frame full parsing