ShellExecuteInfo Fields

The ShellExecuteInfo type exposes the following members.

Fields

	Name	Description
	AppInstanceHandle	[out] If is set and the call succeeds, it sets this member to a value greater than 32. If the function fails, it is set to an error value that indicates the cause of the failure. Although hInstApp is declared as an HINSTANCE for compatibility with 16-bit Windows applications, it is not a true HINSTANCE. It can be cast only to an int and compared to either 32 or the following error codes.
	Class	The address of a null-terminated string that specifies one of the following: - A ProgId.For example, "Paint.Picture". - A URI protocol scheme. For example, "http". - A file extension.For example, ".txt". - A registry path under HKEY_CLASSES_ROOT that names a subkey that contains one or more Shell verbs. This key will have a subkey that conforms to the Shell verb registry schema, such as shell\verb name This member is ignored if fMask does not include .
	Directory	Optional. The address of a null-terminated string that specifies the name of the working directory. If this member is NULL, the current directory is used as the working directory.
	File	The address of a null-terminated string that specifies the name of the file or object on which will perform the action specified by the Verb parameter. The system registry verbs that are supported by the function include "open" for executable files and document files and "print" for document files for which a print handler has been registered. Other applications might have added Shell verbs through the system registry, such as "play" for .avi and .wav files. To specify a Shell namespace object, pass the fully qualified parse name and set the flag in the Mask parameter.
	Handle	Optional. A handle to the parent window, used to display any message boxes that the system might produce while executing this function. This value can be NULL.
	HotKey	A keyboard shortcut 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. This member is ignored if fMask does not include SEE_MASK_HOTKEY.
	Icon	A handle to the icon for the file type. This member is ignored if Mask does not include . This value is used only in Windows XP and earlier. It is ignored as of Windows Vista.
	IdList	The address of an absolute ITEMIDLIST structure (PCIDLIST_ABSOLUTE) to contain an item identifier list that uniquely identifies the file to execute. This member is ignored if the Mask member does not include or .
	Mask	Flags that indicate the content and validity of the other structure members; a combination of values of type .
	Parameters	Optional. The address of a null-terminated string that contains the application parameters. The parameters must be separated by spaces. If the File member specifies a document file, Parameters should be NULL.
	ProcessHandle	A handle to the newly started application. This member is set on return and is always NULL unless Mask is set to . Even if fMask is set to , hProcess will be NULL if no process was launched. For example, if a document to be launched is a URL and an instance of Internet Explorer is already running, it will display the document. No new process is launched, and ProcessHandle will be NULL.
	RegistryKeyClass	A handle to the registry key for the file type. The access rights for this registry key should be set to KEY_READ. This member is ignored if Mask does not include .
	Show	Required. Flags that specify how an application is to be shown when it is opened; one of the SW_ values listed for the function. If File specifies a document file, the flag is simply passed to the associated application. It is up to the application to decide how to handle it.
	Size	Required. The size of this structure, in bytes.
	Verb	A string, referred to as a verb, that specifies the action to be performed. The set of available verbs depends on the particular file or folder. Generally, the actions available from an object's shortcut menu are available verbs. This parameter can be NULL, in which case the default verb is used if available. If not, the "open" verb is used. If neither verb is available, the system uses the first verb listed in the registry. These are of type .

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