windows 程序设计 SDK 1（知其所以然技术论坛）

#include <windows.h> LRESULT CALLBACK WndProc(HWND hwnd,UINT uMsg,WPARAM wParam,LPARAM lParam ); int WINAPI WinMain( HINSTANCE hInstance, // handle to current instance HINSTANCE hPrevInstance, // handle to previous instance PSTR lpCmdLine, // command line int nCmdShow // show state ) { static TCHAR AppName[] = TEXT("HelloWin"); HWND hwnd; MSG msg; WNDCLASS wndclass; wndclass.style=CS_HREDRAW|CS_VREDRAW; wndclass.lpfnWndProc=WndProc; wndclass.cbClsExtra=0; wndclass.cbWndExtra=0; wndclass.hInstance=hInstance; wndclass.hIcon=LoadIcon(NULL,IDI_ERROR); wndclass.hCursor=LoadCursor(NULL,IDC_CROSS); wndclass.hbrBackground=(HBRUSH)GetStockObject(BLACK_BRUSH); wndclass.lpszMenuName=NULL; wndclass.lpszClassName=AppName; if(!RegisterClass(&wndclass)) { MessageBox(NULL,TEXT("This porgram must run NT!"),AppName,MB_OK); return 0; } hwnd=CreateWindow( AppName, // registered class name TEXT("HELLOWIN"), // window name WS_OVERLAPPEDWINDOW, // window style 500, // horizontal position of window 500, // vertical position of window 500, // window width 500, // window height NULL, // handle to parent or owner window NULL, // menu handle or child identifier hInstance, // handle to application instance NULL // window-creation data ); ShowWindow(hwnd,SW_SHOW); UpdateWindow(hwnd); while ( GetMessage(&msg,hwnd,0,0)>0) { TranslateMessage(&msg); DispatchMessage(&msg); } return msg.wParam; } LRESULT CALLBACK WndProc(HWND hwnd,UINT uMsg,WPARAM wParam,LPARAM lParam ) { PAINTSTRUCT ps; HDC hdc; RECT rect; switch(uMsg) { case WM_CREATE: return 0; case WM_PAINT: hdc=BeginPaint(hwnd,&ps); GetClientRect(hwnd,&rect); DrawText(hdc,TEXT("Hello Window XP!"),-1,&rect,DT_CENTER|DT_SINGLELINE|DT_VCENTER); EndPaint(hwnd,&ps); return 0; case WM_DESTROY: PostQuitMessage(0); return 0; } return DefWindowProc(hwnd,uMsg,wParam,lParam); }