The ShellExecute function opens or prints a specified file. The file can be an executable file or a document file. See ShellExecuteEx also.
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 |
); |
String |
Meaning |
“open” |
The function opens the file specified by lpFile. The file can be an executable file or a document file. The file can be a folder to open. |
“print” |
The function prints the file specified by lpFile. The file should be a document file. If the file is an executable file, the function opens the file, as if “open” had been specified. |
“explore” |
The function explores the folder specified by lpFile. |
The lpOperation parameter can be NULL. In that case, the function opens
the file specified by lpFile.
If lpFile specifies a document file, lpParameters should be
NULL.
Value |
Meaning |
SW_HIDE |
Hides the window and activates another window. |
SW_MAXIMIZE |
Maximizes the specified window. |
SW_MINIMIZE |
Minimizes the specified window and activates the next top-level window in the Z order. |
SW_RESTORE |
Activates and displays the window. If the window is minimized or maximized, Windows restores it to its original size and position. An application should specify this flag when restoring a minimized window. |
SW_SHOW |
Activates the window and displays it in its current size and position. |
SW_SHOWDEFAULT |
Sets the show state based on the SW_ flag specified in the STARTUPINFO structure passed to the CreateProcess function by the program that started the application. An application should call ShowWindow with this flag to set the initial show state of its main window. |
SW_SHOWMAXIMIZED |
Activates the window and displays it as a maximized window. |
SW_SHOWMINIMIZED |
Activates the window and displays it as a minimized window. |
SW_SHOWMINNOACTIVE |
Displays the window as a minimized window. The active window remains active. |
SW_SHOWNA |
Displays the window in its current state. The active window remains active. |
SW_SHOWNOACTIVATE |
Displays a window in its most recent size and position. The active window remains active. |
SW_SHOWNORMAL |
Activates and displays a window. If the window is minimized or maximized, Windows restores it to its original size and position. An application should specify this flag when displaying the window for the first time. |
If lpFile specifies a document file, nShowCmd should be zero.
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.
If the function fails, the return value is an error value that is less than or equal to 32. The following table lists these error values:
Value |
Meaning |
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-Win32 .EXE or error in .EXE image). |
SE_ERR_ACCESSDENIED |
The operating system denied access to the specified file. |
SE_ERR_ASSOCINCOMPLETE |
The filename association is incomplete or invalid. |
SE_ERR_DDEBUSY |
The 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 was not found. |
SE_ERR_FNF |
The specified file was not found. |
SE_ERR_NOASSOC |
There is no application associated with the given filename extension. |
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. |
The file specified by the lpFile parameter can be a document file or an executable file. If the file is a document file, the ShellExecute function opens or prints it, depending on the value of the lpOperation parameter. If the file is an executable file, the ShellExecute function opens it, even if lpOperation specifies printing.
You can use ShellExecute to open or explore a shell folder. To open a folder, use either of the following calls:
or ShellExecute(handle, "open", path_to_folder, NULL, NULL, SW_SHOWNORMAL);
To explore a folder, use the following call:
ShellExecute(handle, "explore", path_to_folder, NULL, NULL, SW_SHOWNORMAL);
If lpOperation is NULL, the function opens the file specified by lpFile. If lpOperation is “open” or “explore”, the function will force an open window or explorer.
FindExecutable, ShellExecuteEx
file: /Techref/os/win/api/win32/func/src/f84_16.htm, 13KB, , updated: 2001/6/23 21:41, local time: 2024/9/1 11:59,
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