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Opening the "My Computer" in Win32

Posted on 1997-07-16
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How can I open the "My Computer" on the Desktop within my Delphi 3 (perhaps 2 is the same) program ?
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Question by:webers
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pcs071997 earned 50 total points
ID: 1338972
You can use this function(win32 shell API)You can use that you want to using ICON or CLASS NAME or etc. MY COMPUTER' CLASS NAME => CabinetWClassShellExecuteEx(LPSHELLEXECUTEINFO lpExecInfo);
SHELLEXECUTEINFO
typedef struct _SHELLEXECUTEINFO {   // sei
    DWORD     cbSize;
    ULONG     fMask;
    HWND      hwnd;
    LPCSTR    lpVerb;
    LPCSTR    lpFile;
    LPCSTR    lpParameters;
    LPCSTR    lpDirectory;
    int       nShow;
    HINSTANCE hInstApp;
 
    // Optional members
    LPVOID lpIDList;
    LPCSTR lpClass;
    HKEY   hkeyClass;
    DWORD  dwHotKey;
    HANDLE hIcon;
    HANDLE hProcess;
} SHELLEXECUTEINFO, FAR *LPSHELLEXECUTEINFO;


Members
 cbSize
Specifies the size, in bytes, of the structure.
 fMask
This is an array of flags that indicate the content and validity of the other structure members. You can specify a combination of the following values:Value Meaning
 SEE_MASK_CLASSKEY
Use the class key given by the hkeyClass member.
 SEE_MASK_CLASSNAME
Use the class name given by the lpClass member.
 SEE_MASK_CONNECTNETDRV
The lpFile member is a Universal Naming Convention (UNC) path of a file on a network. Validate the share and connect to a drive letter.
 SEE_MASK_DOENVSUBST
Expand any environment variables specified in the string given by the lpDirectory or lpFile member.
 SEE_MASK_FLAG_DDEWAIT
Wait for the DDE conversation to terminate before returning, if the ShellExecuteEx function causes a DDE conversation to start.
 SEE_MASK_FLAG_NO_UI
Do not display an error message box if an error occurs.
 SEE_MASK_HOTKEY
Use the hot key given by the dwHotKey member.
 SEE_MASK_ICON
Use the icon given by the hIcon member.
 SEE_MASK_IDLIST
Use the item identifier list given by the lpIDList member.
 SEE_MASK_INVOKEIDLIST
Use the item identifier list given by the lpIDList member to invoke an application. If this member is NULL, the function creates an item identifier list and invokes the application. SEE_MASK_INVOKEIDLIST overrides SEE_MASK_IDLIST.
 SEE_MASK_NOCLOSEPROCESS
Leave the process running after the ShellExecuteEx function exits. The hProcess member receives the handle of the process.

 hwnd
Handle to the parent window for any message boxes that the system may produce while executing this function (for example, for error reporting).
 lpVerb
Pointer to a string specifying the name of a verb. The verb specifies an action for the application to perform. This member defaults to ¡°Open¡± if no verb is specified.
 lpFile
Pointer to a list of null-terminated strings that specify the names of the files to open or print. The function can open an executable file or a document file. The function can print a document file. If the path is not included with a name, the current directory is assumed.
 lpParameters
Pointer to a null-terminated string containing the application parameters. The parameters must be separated by spaces. To include double quotation marks, you must enclose the marks in double quotation marks, as in the following example:

sei.lpParameters = "An example: \"\"\"quoted text\"\"\"";
In this case, the application receives three parameters: An, example:, and ¡°quoted text¡±.
If lpFile specifies a document file, lpParameters should be NULL.
 lpDirectory
Pointer to a null-terminated string that specifies the name of the working directory. If this member is not specified, the current directory is used as the working directory.
 nShow
Show flags. Can be one of the SW_ values described for the ShowWindow function. If lpFile specifies an executable file, nShow specifies how the application is to be shown when it is opened. If lpFile specifies a document file, nShow should be zero.
hInstApp
Handle to the instance of the application that was started or an error value if the application could not be started. (This handle could also be the handle of a dynamic data exchange [DDE] server application.) This member is set on return. Error values can be one of the following:Value
Meaning
SE_ERR_FNF
File not found
SE_ERR_PNF
Path not found
SE_ERR_ACCESSDENIED
Access denied
SE_ERR_OOM
Out of memory
SE_ERR_DLLNOTFOUND
Dynamic-link library not found
SE_ERR_SHARE
Cannot share open file
SE_ERR_ASSOCINCOMPLETE
File association information not complete
SE_ERR_DDETIMEOUT
DDE operation timed out
SE_ERR_DDEFAIL
DDE operation failed
SE_ERR_DDEBUSY
DDE operation busy
SE_ERR_NOASSOC
File association not available


lpIDList
Pointer to an ITEMIDLIST structure that contains an item identifier list that uniquely identifies the file to execute. Ignored if fMask is not set to SEE_MASK_IDLIST.
lpClass
Pointer to a null-terminated string specifying the name of a file class or a globally unique identifier (GUID). Ignored if fMask is not set to SEE_MASK_CLASSNAME.
hkeyClass
Handle to the registry key for the file class. Ignored if fMask is not set to SEE_MASK_CLASSKEY.
dwHotKey
Hot key to associate with the application. The low-order word is the virtual-key code, and the high-order word is a modifier flag (HOTKEYF_). For a list of modifier flags, see the description of the WM_SETHOTKEY message. Ignored if fMask is not set to SEE_MASK_HOTKEY.
hIcon
Handle to the icon for the file class. Ignored if fMask is not set to SEE_MASK_ICON.
hProcess
Handle to the newly started application. This member is set on return and is always NULL if fMask is not set to SEE_MASK_NOCLOSEPROCESS.

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Expert Comment

by:ygolan
ID: 1338973
Another Win32 API to look into is SHGetSpecialFolderLocation (this is probably the correct way to do it, instead of using a hard-coded value for the folder name).

WINSHELLAPI HRESULT WINAPI SHGetSpecialFolderLocation(
    HWND  hwndOwner,       
    int  nFolder,       
    LPITEMIDLIST  * ppidl      
   );

The value you want to use for nFolder is CSIDL_DRIVES.


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Expert Comment

by:pcs071997
ID: 1338974
I thought that webers wanted to run the "my computer" folder.Aren't you ?
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Expert Comment

by:ygolan
ID: 1338975
Yes, that's what he wants. My comment is regarding getting the folder name for "My Computer", instead of hard-coding the class name into your program.
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Author Comment

by:webers
ID: 1338976
Sorry, but I don't know, if that's the answer for my question.  I just wanted to execute the "My Computer" on the desktop.  The same as if you dobleclick on the "My Computer" should happen then.  Did you answer that ?? I'm not very well in API programming. Perhaps you could send me an example ??
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