Forum Graph100

HINSTANCE ShellExecute(
    HWND hwnd, 
    LPCTSTR lpOperation,
    LPCTSTR lpFile, 
    LPCTSTR lpParameters, 
    LPCTSTR lpDirectory,
    INT nShowCmd
);

hwnd -
Handle to a parent window. This window receives any message boxes that an application produces. For example, an application may report an error by producing a message box. 

lpOperation 
Verb string that specifies the action to be performed. The set of available verbs depends on the particular file or folder. It includes the commands listed in the context menu and the registry. The following verbs are usually valid: 
"edit"  Opens an editor. If lpFile is not a document file, the function will fail. 
"explore"  The function explores the folder specified by lpFile.  
"open"  The function opens the file specified by the lpFile parameter. The file can be an executable file or a document file. It can also be a folder. 
"print"  The function prints the document file specified by lpFile. If lpFile is not a document file, the function will fail. 
"properties"  Displays the file or folder's properties. 

This parameter can be NULL. In that case, the function opens the file specified by lpFile. 

lpFile 
Address of a null-terminated string that specifies the file to open or print or the folder to open or explore. The function can open an executable file or a document file. The function can print a document file. 
lpParameters 
If the lpFile parameter specifies an executable file, lpParameters is an address to a null-terminated string that specifies the parameters to be passed to the application. 
If lpFile specifies a document file, lpParameters should be NULL. 

lpDirectory 
Address of a null-terminated string that specifies the default directory. 
nShowCmd 
If lpFile is a document file, nShowCmd should be zero. If lpFile is an executable file, nShowCmd determines how the application is displayed when it is opened. 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. 

SW_SHOW = 5
SW_HIDE = 0

ShellExecute(NULL,"open","crypte.exe","fichier_a_crypter.dat",NULL,SW_SHOW);