Windows Programming--Drawing

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1#include <Windows.h>2#include <tchar.h>3#include <stdio.h>4 #defineNUM 10005 6 LRESULT CALLBACK Windproc (HWND hwnd, UINT message, WPARAM WPARAM, LPARAM LPARAM);7 8 intWinMain (hinstance hInst, hinstance tmp, LPSTR szcmd,intnshow)9 {Ten wndclass wndclass; Onetchar* ClassName = TEXT ("MyClass"); A HWND hwnd; - msg msg; - Hbrush Hbrush; the  -Hbrush = CreateSolidBrush (RGB (0x20,0x85,0x41)); -Wndclass.cbclsextra =0; -Wndclass.cbwndextra =0; +Wndclass.hbrbackground =Hbrush; -Wndclass.hcursor =loadcursor (NULL, idc_arrow); +Wndclass.hicon =LoadIcon (NULL, idi_application); AWndclass.hinstance =HInst; atWndclass.lpfnwndproc =Windproc; -Wndclass.lpszclassname =ClassName; -Wndclass.lpszmenuname =NULL; -Wndclass.style = Cs_vredraw |Cs_hredraw; -  -     if(! RegisterClass (&wndclass)) in     { -MessageBox (NULL, TEXT ("gegister Class fail!!"), TEXT ("Error"), MB_OK); to         return 0; +     } -  the     //ws_vscroll window scroll bar *hwnd = CreateWindow (ClassName, TEXT ("Hello"), Ws_overlappedwindow | Ws_vscroll,0,0, +, -, NULL, NULL, HINST, NULL); $     if(hwnd = =NULL)Panax Notoginseng     { -MessageBox (NULL, TEXT ("Create Window fail!!"), TEXT ("Error"), MB_OK); the         return 0; +     } A ShowWindow (hwnd, nshow); the UpdateWindow (HWND); +  -      while(GetMessage (&msg, NULL,0,0)) $     { $TranslateMessage (&msg); -DispatchMessage (&msg); -     } the  -     return 0;Wuyi } the  - LRESULT CALLBACK Windproc (HWND hwnd, UINT message, WPARAM WPARAM, LPARAM LPARAM) Wu { - HDC hdc; About     StaticHpen Hpen1,hpen2; $     StaticHbrush Hbrush; - paintstruct pt; - textmetric ts; -TCHAR buf[1024x768]; A     intI//Number of rows +     Static intCychar;//Font Size the     Static intCy//Customer Area Height -     StaticSCROLLINFO si; $     Static intPosition =0; the     Switch(message) the     { the      Casewm_create: theHDC =GetDC (HWND); -Hbrush = CreateSolidBrush (RGB (249,98,241)); inHPen1 = CreatePen (Ps_solid, -, RGB (0,0,255)); theGetTextMetrics (HDC, &ts); the ReleaseDC (hwnd, HDC); AboutCychar =Ts.tmheight; theSi.cbsize =sizeof(SI); the         return 0; the      Casewm_size: +         //Window Height -cy =HiWord (lParam); theSi.fmask =Sif_all;BayiSi.nmax = NUM-1; theSi.nmin =0; theSi.npage = CY/Cychar; -Si.npos =position; -Si.ntrackpos =0; theSetscrollinfo (hwnd, Sb_vert, &si, TRUE); the      CaseWm_vscroll: the         //you can omit the Iparam parameter when the scrollbar is part of a window the         Switch(LoWord (wParam)) -         { the          CaseSb_bottom: theSi.npos =Si.nmax; the              Break;94          CaseSb_linedown: thesi.npos++; the              Break; the          CaseSb_lineup:98si.npos--; About              Break; -          CaseSb_pagedown:101Si.npos = Si.npos + cy/Cychar;102              Break;103          CaseSb_pageup:104Si.npos = si.npos-cy/Cychar; the              Break;106          Casesb_thumbposition:107Si.npos =HiWord (wParam);108              Break;109         default: the              Break;111         } theSi.fmask =Sif_pos;113Setscrollinfo (hwnd, Sb_vert, &si, TRUE); theGetScrollBarInfo (hwnd, Sb_vert, &si); thePosition =Si.npos; the         //UpdateWindow (HWND);//The window must have an invalid area, otherwise the refresh is also a white brush. Replace with InvalidateRect forced flush117         //invalidaterect function generates WM_PAINT message118 InvalidateRect (hwnd, NULL, FALSE);119         return 0; -      CaseWM_PAINT:121GetScrollBarInfo (hwnd, Sb_vert, &si);122         //after calling BeginPaint, the entire client goes to work. ValidateRect makes any rectangular area of the client area effective123HDC = BeginPaint (hwnd, &PT);124Hpen2=(Hpen) SelectObject (hdc, HPEN1); the SelectObject (hdc, hbrush);126Movetoex (HDC, -, -, NULL);127LineTo (HDC, -, -); -Rectangle (HDC, -, -, $, $);129 SelectObject (hdc, HPEN2); the 131          for(i =0; i < NUM; i++) the         {133_stprintf (buf, TEXT ("---------------%d--------------"), Si.npos +i);134TextOut (HDC,0ICychar, buf, _tcslen (BUF));135         }136EndPaint (hwnd, &PT);137         return 0;138      CaseWm_destroy:139PostQuitMessage (0);//Send Wm_quit message $         return 0;141     default:142          Break;143     }144 145     returnDefWindowProc (hwnd, message, WParam, lParam);146}

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Windows Programming--Drawing