ErrorShow
1 #include "..\CommonFiles\CmnHdr.h" /* See Appendix A. */ 2 #include <Windowsx.h> 3 #include <tchar.h> 4 #include "Resource.h" 5 6 7 /// 8 9 10 #define ESM_POKECODEANDLOOKUP (WM_USER + 100) 11 const TCHAR g_szAppName[] = TEXT("Error Show"); 12 13 14 /// 15 16 17 BOOL Dlg_OnInitDialog(HWND hwnd, HWND hwndFocus, LPARAM lParam) { 18 19 chSETDLGICONS(hwnd, IDI_ERRORSHOW); 20 21 // Don't accept error codes more than 5 digits long 22 Edit_LimitText(GetDlgItem(hwnd, IDC_ERRORCODE), 5); 23 24 // Look up the command-line passed error number 25 SendMessage(hwnd, ESM_POKECODEANDLOOKUP, lParam, 0); 26 return(TRUE); 27 } 28 29 30 /// 31 32 33 void Dlg_OnCommand(HWND hwnd, int id, HWND hwndCtl, UINT codeNotify) { 34 35 switch (id) { 36 37 case IDCANCEL: 38 EndDialog(hwnd, id); 39 break; 40 41 case IDC_ALWAYSONTOP: 42 SetWindowPos(hwnd, IsDlgButtonChecked(hwnd, IDC_ALWAYSONTOP) 43 ? HWND_TOPMOST : HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE); 44 break; 45 46 case IDC_ERRORCODE: 47 EnableWindow(GetDlgItem(hwnd, IDOK), Edit_GetTextLength(hwndCtl) > 0); 48 break; 49 50 case IDOK: 51 // Get the error code 52 DWORD dwError = GetDlgItemInt(hwnd, IDC_ERRORCODE, NULL, FALSE); 53 54 HLOCAL hlocal = NULL; // Buffer that gets the error message string 55 56 // Use the default system locale since we look for Windows messages. 57 // Note: this MAKELANGID combination has 0 as value 58 DWORD systemLocale = MAKELANGID(LANG_NEUTRAL, SUBLANG_NEUTRAL); 59 60 // Get the error code's textual description 61 BOOL fOk = FormatMessage( 62 FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS | 63 FORMAT_MESSAGE_ALLOCATE_BUFFER, 64 NULL, dwError, systemLocale, 65 (PTSTR) &hlocal, 0, NULL); 66 67 if (!fOk) { 68 // Is it a network-related error? 69 HMODULE hDll = LoadLibraryEx(TEXT("netmsg.dll"), NULL, 70 DONT_RESOLVE_DLL_REFERENCES); 71 72 if (hDll != NULL) { 73 fOk = FormatMessage( 74 FORMAT_MESSAGE_FROM_HMODULE | FORMAT_MESSAGE_IGNORE_INSERTS | 75 FORMAT_MESSAGE_ALLOCATE_BUFFER, 76 hDll, dwError, systemLocale, 77 (PTSTR) &hlocal, 0, NULL); 78 FreeLibrary(hDll); 79 } 80 } 81 82 if (fOk && (hlocal != NULL)) { 83 SetDlgItemText(hwnd, IDC_ERRORTEXT, (PCTSTR) LocalLock(hlocal)); 84 LocalFree(hlocal); 85 } else { 86 SetDlgItemText(hwnd, IDC_ERRORTEXT, 87 TEXT("No text found for this error number.")); 88 } 89 90 break; 91 } 92 } 93 94 95 /// 96 97 98 INT_PTR WINAPI Dlg_Proc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) { 99 100 switch (uMsg) {101 chHANDLE_DLGMSG(hwnd, WM_INITDIALOG, Dlg_OnInitDialog);102 chHANDLE_DLGMSG(hwnd, WM_COMMAND, Dlg_OnCommand);103 104 case ESM_POKECODEANDLOOKUP:105 SetDlgItemInt(hwnd, IDC_ERRORCODE, (UINT) wParam, FALSE);106 FORWARD_WM_COMMAND(hwnd, IDOK, GetDlgItem(hwnd, IDOK), BN_CLICKED, 107 PostMessage);108 SetForegroundWindow(hwnd);109 break;110 }111 112 return(FALSE);113 }114 115 116 ///117 118 119 int WINAPI _tWinMain(HINSTANCE hinstExe, HINSTANCE, PTSTR pszCmdLine, int) {120 121 HWND hwnd = FindWindow(TEXT("#32770"), TEXT("Error Show"));122 if (IsWindow(hwnd)) {123 // An instance is already running, activate it and send it the new #124 SendMessage(hwnd, ESM_POKECODEANDLOOKUP, _ttoi(pszCmdLine), 0);125 } else {126 DialogBoxParam(hinstExe, MAKEINTRESOURCE(IDD_ERRORSHOW), 127 NULL, Dlg_Proc, _ttoi(pszCmdLine));128 }129 return(0);130 }
转载于:https://www.cnblogs.com/zhtf2014/archive/2009/09/22/1572097.html
相关资源：windows 核心编程（第五版）中缺失的头文件CmnHdr.h
