VC++根据键盘按键显示ASCII码

//键盘ASCII码查询器 //倪梓鹏 2003/5/9 #include <windows.h> #include "resource.h" //Download by http://www.codefans.net //---------------------------------------------------------------- static TCHAR szAppName[] = TEXT ("ASCII") ; LONG wpWndProc; HWND hDlg; //---------------------------------------------------------------- LRESULT APIENTRY WndProc (HWND, UINT, WPARAM, LPARAM) ; LRESULT APIENTRY EditSubclassProc( HWND, UINT, WPARAM, LPARAM ) ; int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow) { HWND hwnd ; MSG msg ; WNDCLASS wndclass ; wndclass.style = CS_HREDRAW | CS_VREDRAW ; wndclass.lpfnWndProc = WndProc; wndclass.cbClsExtra = 0 ; wndclass.cbWndExtra = DLGWINDOWEXTRA ; wndclass.hInstance = hInstance ; wndclass.hIcon = LoadIcon (hInstance, szAppName); wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ; wndclass.hbrBackground = (HBRUSH) (COLOR_BTNFACE+1) ; wndclass.lpszMenuName = szAppName ; wndclass.lpszClassName = szAppName ; if (!RegisterClass (&wndclass)) { MessageBox (NULL, TEXT ("This program requires Windows NT!"), szAppName, MB_ICONERROR) ; return 0 ; } hwnd = CreateDialog(hInstance,szAppName,NULL,(DLGPROC)WndProc); ShowWindow (hwnd, iCmdShow) ; UpdateWindow (hwnd) ; while (GetMessage (&msg, NULL, 0, 0) ) { if (!IsWindow(hwnd) || !IsDialogMessage(hwnd, &msg)) { TranslateMessage (&msg) ; DispatchMessage (&msg) ; } } return msg.wParam ; } LRESULT APIENTRY WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { static HINSTANCE hInstance; switch (message) { case WM_INITDIALOG: hDlg = hwnd; SetFocus(GetDlgItem(hwnd,IDEXIT)); wpWndProc = SetWindowLong( GetDlgItem(hwnd,IDC_EDITIN), GWL_WNDPROC, (LONG) EditSubclassProc); return TRUE; case WM_COMMAND: switch(LOWORD(wParam)) { case IDEXIT: DestroyWindow(hwnd); break; } return 0; case WM_DESTROY: PostQuitMessage (0) ; return 0 ; } return DefWindowProc (hwnd, message, wParam, lParam) ; } LRESULT APIENTRY EditSubclassProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) { TCHAR szKeyName[32] = " "; TCHAR szBuffer[256] = " " ; HWND hEditIn, hEditOut; hEditIn = GetDlgItem(hwnd,IDC_EDITIN); hEditOut = GetDlgItem(hwnd,IDC_EDITOUT); if( WM_KEYDOWN == uMsg || WM_SYSKEYDOWN== uMsg || WM_SYSCHAR == uMsg) //WM_KEYDOWN和WM_SYSKEYDOWN消息产生了字符信息，先处理WM_CHAR不会处理的信息 { GetKeyNameText(lParam,szKeyName,sizeof (szKeyName) / sizeof (TCHAR)) ; SetDlgItemText(hDlg,IDC_EDITIN,szKeyName); wsprintf(szBuffer,"%d",wParam); SetDlgItemText(hDlg,IDC_EDITOUT, szBuffer); } if(WM_CHAR == uMsg||WM_SYSCHAR == uMsg) { wsprintf(szBuffer,"%c",wParam); SetDlgItemText(hDlg,IDC_EDITIN, szBuffer);//显示输入的按键 wsprintf(szBuffer, "%d", wParam); SetDlgItemText(hDlg,IDC_EDITOUT, szBuffer);//显示输入的按键的ASCII码 return TRUE; } if(wParam == VK_RETURN || wParam == VK_BACK || wParam == VK_ESCAPE)//处理Enter等其他键 { SetDlgItemText(hDlg,IDC_EDITIN,""); GetKeyNameText(lParam,szKeyName,sizeof (szKeyName) / sizeof (TCHAR)) ; SetDlgItemText(hDlg,IDC_EDITIN,szKeyName); wsprintf(szBuffer,"%d",wParam); SetDlgItemText(hDlg,IDC_EDITOUT, szBuffer); return TRUE; } return CallWindowProc((WNDPROC)wpWndProc, hwnd, uMsg, wParam, lParam); }