请问如何判断 ShellExecute 执行是否成功?

[WORKPLUS]

ShellExecute 返回为 * void ,如何判断,执行 ShellExecute 成功或者失败?

[海嵌]

HINSTANCE ShellExecute(
HWND hwnd, // handle to parent window
LPCTSTR lpOperation, // pointer to string that specifies operation to perform
LPCTSTR lpFile, // pointer to filename or folder name string
LPCTSTR lpParameters, // pointer to string that specifies executable-file parameters
LPCTSTR lpDirectory, // pointer to string that specifies default directory
INT nShowCmd // whether file is shown when opened
);


Return Values

If the function succeeds, the return value is the instance handle of the application that was run, or the handle of a dynamic data exchange (DDE) server application.

[柯本]

ShellExecute错误码:
0 The operating system is out of memory or resources.
ERROR_FILE_NOT_FOUND The specified file was not found.
ERROR_PATH_NOT_FOUND The specified path was not found.
ERROR_BAD_FORMAT The .exe file is invalid (non-Microsoft Win32® .exe or error in .exe image).
SE_ERR_ACCESSDENIED The operating system denied access to the specified file.
SE_ERR_ASSOCINCOMPLETE The file name association is incomplete or invalid.
SE_ERR_DDEBUSY The Dynamic Data Exchange (DDE) transaction could not be completed because other DDE transactions were being processed.
SE_ERR_DDEFAIL The DDE transaction failed.
SE_ERR_DDETIMEOUT The DDE transaction could not be completed because the request timed out.
SE_ERR_DLLNOTFOUND The specified dynamic-link library (DLL) was not found.
SE_ERR_FNF The specified file was not found.
SE_ERR_NOASSOC There is no application associated with the given file name extension. This error will also be returned if you attempt to print a file that is not printable.
SE_ERR_OOM There was not enough memory to complete the operation.
SE_ERR_PNF The specified path was not found.
SE_ERR_SHARE A sharing violation occurred.

[jaffy]

都答过了,路过.

[lother]

上面的够详细

[ccrun.com]

If the function fails, the return value is an error value that is less than or equal to 32

[jiangshx]

偶想看中文的答案，^_^

[sanyou98]

up

[BlueDeepOcean]

HINSTANCE hInstance = ShellExecute(Application->Handle,"open","c:\\a.txt",NULL,NULL,SW_SHOW);

if (hInstance)
ShowMessage("OK!");
else
ShowMessage("Bad!");

[BlueDeepOcean]

上面的有些问题："c:\\a.txt"应当为：AnsiString("c:\\a.txt").c_str()

还可以写成：
Application->Handle = ShellExecute(Application->Handle,"open",AnsiString("c:\\a.txt").c_str(),NULL,NULL,SW_SHOW);
if (Application->Handle)
ShowMessage("a");
else
ShowMessage("b");

由于ShellExecute又你的应用程序触发，因此返回结果始终为true，它不同于调用DLL过程。但愿里和它一样。

[xiaoshi0]

妖哥说的对

Returns a value greater than 32 if successful, or an error value that is less than or equal to 32 otherwise.

如果返回值大于32就说明成功了，如果小于等于32则说明失败。

[BlueDeepOcean]

ShellExecute(Application->Handle,
"open",
AnsiString("D:\\Documents and Settings\\Administrator\\桌面\\Hack.txt").c_str(),
NULL,
NULL,
SW_SHOW);
switch(GetLastError())
{
case 0:
ShowMessage("0");
break;
case ERROR_FILE_NOT_FOUND:
ShowMessage("ERROR_FILE_NOT_FOUND");
break;
case ERROR_PATH_NOT_FOUND:
ShowMessage("ERROR_PATH_NOT_FOUND");
break;
case ERROR_BAD_FORMAT:
ShowMessage("ERROR_BAD_FORMAT");
break;
case SE_ERR_ACCESSDENIED:
ShowMessage("SE_ERR_ACCESSDENIED");
break;
case SE_ERR_ASSOCINCOMPLETE:
ShowMessage("SE_ERR_ASSOCINCOMPLETE");
break;
case SE_ERR_DDEBUSY:
ShowMessage("SE_ERR_DDEBUSY");
break;
case SE_ERR_DDEFAIL:
ShowMessage("SE_ERR_DDEFAIL");
break;
case SE_ERR_DDETIMEOUT:
ShowMessage("SE_ERR_DDETIMEOUT");
break;
case SE_ERR_DLLNOTFOUND:
ShowMessage("SE_ERR_DLLNOTFOUND");
break;
/*case SE_ERR_FNF:
ShowMessage("SE_ERR_FNF");
break;*/
case SE_ERR_NOASSOC:
ShowMessage("SE_ERR_NOASSOC");
break;
case SE_ERR_OOM:
ShowMessage("SE_ERR_OOM");
break;
/*case SE_ERR_PNF:
ShowMessage("SE_ERR_PNF");
break;*/
case SE_ERR_SHARE:
ShowMessage("SE_ERR_SHARE");
break;
}