Implement monitoring of file descriptors in wxMotif event loop.

[wxWidgets.git] / interface / wx / utils.h

diff --git a/interface/wx/utils.h b/interface/wx/utils.h
index de5aae9748f04cad17261d0745d987bdadeb2986..34a9e15347460572c0d182de67325c60e1614f1c 100644 (file)
--- a/interface/wx/utils.h
+++ b/interface/wx/utils.h
@@ -6,6 +6,56 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

+/**
+    Signal constants used by wxProcess.
+*/
+enum wxSignal
+{
+    wxSIGNONE = 0,  //!< verify if the process exists under Unix
+    wxSIGHUP,
+    wxSIGINT,
+    wxSIGQUIT,
+    wxSIGILL,
+    wxSIGTRAP,
+    wxSIGABRT,
+    wxSIGEMT,
+    wxSIGFPE,
+    wxSIGKILL,      //!< forcefully kill, dangerous!
+    wxSIGBUS,
+    wxSIGSEGV,
+    wxSIGSYS,
+    wxSIGPIPE,
+    wxSIGALRM,
+    wxSIGTERM       //!< terminate the process gently
+};
+
+/**
+    Return values for wxProcess::Kill.
+*/
+enum wxKillError
+{
+    wxKILL_OK,              //!< no error
+    wxKILL_BAD_SIGNAL,      //!< no such signal
+    wxKILL_ACCESS_DENIED,   //!< permission denied
+    wxKILL_NO_PROCESS,      //!< no such process
+    wxKILL_ERROR            //!< another, unspecified error
+};
+
+enum wxKillFlags
+{
+    wxKILL_NOCHILDREN = 0,  //!< don't kill children
+    wxKILL_CHILDREN = 1     //!< kill children
+};
+
+enum wxShutdownFlags
+{
+    wxSHUTDOWN_FORCE    = 1, //!< can be combined with other flags (MSW-only)
+    wxSHUTDOWN_POWEROFF = 2, //!< power off the computer
+    wxSHUTDOWN_REBOOT   = 4, //!< shutdown and reboot
+    wxSHUTDOWN_LOGOFF   = 8  //!< close session (currently MSW-only)
+};
+
+

 /**
     @class wxWindowDisabler
 
 /**
     @class wxWindowDisabler
 


@@ -37,6 +87,14 @@ public:
     /**
         Disables all top level windows of the applications with the exception
         of @a winToSkip if it is not @NULL.
     /**
         Disables all top level windows of the applications with the exception
         of @a winToSkip if it is not @NULL.

+
+        Notice that under MSW if @a winToSkip appears in the taskbar, the user
+        will be able to close the entire application (even though its main
+        window is disabled) by right clicking on the taskbar icon and selecting
+        the appropriate "Close" command from the context menu. To prevent this
+        from happening you may want to use wxFRAME_TOOL_WINDOW, if applicable,
+        or wxFRAME_NO_TASKBAR style when creating the window that will remain
+        enabled.

     */
     wxWindowDisabler(wxWindow* winToSkip);
 
     */
     wxWindowDisabler(wxWindow* winToSkip);
 


@@ -106,7 +164,7 @@ public:
 
     @header{wx/utils.h}
 */
 
     @header{wx/utils.h}
 */

-void wxBeginBusyCursor(wxCursor* cursor = wxHOURGLASS_CURSOR);
+void wxBeginBusyCursor(const wxCursor* cursor = wxHOURGLASS_CURSOR);

 
 /**
     Changes the cursor back to the original cursor, for all windows in the
 
 /**
     Changes the cursor back to the original cursor, for all windows in the


@@ -134,6 +192,8 @@ bool wxIsBusy();
     @note This function is categorized as a GUI one and so is not thread-safe.
 
     @header{wx/utils.h}
     @note This function is categorized as a GUI one and so is not thread-safe.
 
     @header{wx/utils.h}

+
+    @library{wxcore}

 */
 void wxBell();
 
 */
 void wxBell();
 


@@ -145,17 +205,28 @@ void wxBell();
     doesn't otherwise handle this event.
 
     @since 2.9.0
     doesn't otherwise handle this event.
 
     @since 2.9.0

+

     @see wxGetLibraryVersionInfo()
     @see wxGetLibraryVersionInfo()

+

     @header{wx/utils.h}
 */
 void wxInfoMessageBox(wxWindow* parent);
 
     @header{wx/utils.h}
 */
 void wxInfoMessageBox(wxWindow* parent);
 

+//@}
+
+/** @addtogroup group_funcmacro_version */
+//@{
+

 /**
     Get wxWidgets version information.
 
     @since 2.9.2
 /**
     Get wxWidgets version information.
 
     @since 2.9.2

+

     @see wxVersionInfo
     @see wxVersionInfo

+

     @header{wx/utils.h}
     @header{wx/utils.h}

+
+    @library{wxcore}

 */
 wxVersionInfo wxGetLibraryVersionInfo();
 
 */
 wxVersionInfo wxGetLibraryVersionInfo();
 


@@ -335,6 +406,9 @@ void wxEnableTopLevelWindows(bool enable = true);
     Find the deepest window at the given mouse position in screen coordinates,
     returning the window if found, or @NULL if not.
 
     Find the deepest window at the given mouse position in screen coordinates,
     returning the window if found, or @NULL if not.
 

+    This function takes child windows at the given position into account even
+    if they are disabled. The hidden children are however skipped by it.
+

     @header{wx/utils.h}
 */
 wxWindow* wxFindWindowAtPoint(const wxPoint& pt);
     @header{wx/utils.h}
 */
 wxWindow* wxFindWindowAtPoint(const wxPoint& pt);


@@ -444,24 +518,92 @@ bool wxLaunchDefaultApplication(const wxString& document, int flags = 0);
 bool wxLaunchDefaultBrowser(const wxString& url, int flags = 0);
 
 /**
 bool wxLaunchDefaultBrowser(const wxString& url, int flags = 0);
 
 /**

-    Loads a user-defined Windows resource as a string. If the resource is
-    found, the function creates a new character array and copies the data into
-    it. A pointer to this data is returned. If unsuccessful, @NULL is returned.
+    Loads an object from Windows resource file.

 
 

-    The resource must be defined in the @c .rc file using the following syntax:
+    This function loads the resource with the given name and type from the
+    resources embedded into a Windows application.

 
 

+    The typical use for it is to load some data from the data files embedded
+    into the program itself. For example, you could have the following fragment
+    in your @c .rc file

     @code
     @code

-    myResource TEXT file.ext
+        mydata  MYDATA  "myfile.dat"

     @endcode
     @endcode

+    and then use it in the following way:
+    @code
+        const void* data = NULL;
+        size_t size = 0;
+        if ( !wxLoadUserResource(&data, &size, "mydata", "MYDATA") ) {
+            ... handle error ...
+        }
+        else {
+            // Use the data in any way, for example:
+            wxMemoryInputStream is(data, size);
+            ... read the data from stream ...
+        }
+    @endcode
+
+    @param outData Filled with the pointer to the data on successful return.
+        Notice that this pointer does @em not need to be freed by the caller.
+    @param outLen Filled with the length of the data in bytes.
+    @param resourceName The name of the resource to load.
+    @param resourceType The type of the resource in usual Windows format, i.e.
+        either a real string like "MYDATA" or an integer created by the
+        standard Windows @c MAKEINTRESOURCE() macro, including any constants
+        for the standard resources types like @c RT_RCDATA.
+    @param module The @c HINSTANCE of the module to load the resources from.
+        The current module is used by default.
+    @return true if the data was loaded from resource or false if it couldn't
+        be found (in which case no error is logged) or was found but couldn't
+        be loaded (which is unexpected and does result in an error message).
+
+    This function is available under Windows only.

 
 

-    Where @c file.ext is a file that the resource compiler can find.
+    @library{wxbase}
+
+    @header{wx/utils.h}
+
+    @since 2.9.1
+ */
+bool
+wxLoadUserResource(const void **outData,
+                   size_t *outLen,
+                   const wxString& resourceName,
+                   const wxChar* resourceType = "TEXT",
+                   WXHINSTANCE module = 0);
+
+/**
+    Loads a user-defined Windows resource as a string.
+
+    This is a wrapper for the general purpose overload wxLoadUserResource(const
+    void**, size_t*, const wxString&, const wxChar*, WXHINSTANCE) and can be
+    more convenient for the string data, but does an extra copy compared to the
+    general version.
+
+    @param resourceName The name of the resource to load.
+    @param resourceType The type of the resource in usual Windows format, i.e.
+        either a real string like "MYDATA" or an integer created by the
+        standard Windows @c MAKEINTRESOURCE() macro, including any constants
+        for the standard resources types like @c RT_RCDATA.
+    @param pLen Filled with the length of the returned buffer if it is
+        non-@NULL. This parameter should be used if NUL characters can occur in
+        the resource data. It is new since wxWidgets 2.9.1
+    @param module The @c HINSTANCE of the module to load the resources from.
+        The current module is used by default. This parameter is new since
+        wxWidgets 2.9.1.
+    @return A pointer to the data to be <tt>delete[]<tt>d by caller on success
+        or @NULL on error.

 
     This function is available under Windows only.
 
 
     This function is available under Windows only.
 

+    @library{wxbase}
+

     @header{wx/utils.h}
 */
     @header{wx/utils.h}
 */

-wxString wxLoadUserResource(const wxString& resourceName,
-                            const wxString& resourceType = "TEXT");
+char* wxLoadUserResource(const wxString& resourceName,
+                         const wxChar* resourceType = "TEXT",
+                         int* pLen = NULL,
+                         WXHINSTANCE module = 0);

 
 /**
     @deprecated Replaced by wxWindow::Close(). See the
 
 /**
     @deprecated Replaced by wxWindow::Close(). See the


@@ -482,19 +624,19 @@ void wxPostDelete(wxObject* object);
 
     @header{wx/utils.h}
 */
 
     @header{wx/utils.h}
 */

-extern "C"
-{
-typedef int (wxCMPFUNC_CONV *CMPFUNCDATA)(const void* pItem1, const void* pItem2, const void* user_data);
-}
+typedef int (*wxSortCallback)(const void* pItem1, const void* pItem2, const void* user_data);

 
 /**
 
 /**

-    Function for performing a qsort operation including a user data
-    parameter.
+    Function implementing quick sort algorithm.
+
+    This function sorts @a total_elems objects of size @a size located at @a
+    pbase. It uses @a cmp function for comparing them and passes @a user_data
+    pointer to the comparison function each time it's called.

 
     @header{wx/utils.h}
 */
 
     @header{wx/utils.h}
 */

-void wxQsort(void *const pbase, size_t total_elems,
-             size_t size, CMPFUNCDATA cmp, const void* user_data);
+void wxQsort(void* pbase, size_t total_elems,
+             size_t size, wxSortCallback cmp, const void* user_data);

 
 
 /**
 
 
 /**


@@ -509,6 +651,22 @@ void wxQsort(void *const pbase, size_t total_elems,
 */
 void wxSetDisplayName(const wxString& displayName);
 
 */
 void wxSetDisplayName(const wxString& displayName);
 

+
+/**
+   flags for wxStripMenuCodes
+*/
+enum
+{
+    // strip '&' characters
+    wxStrip_Mnemonics = 1,
+
+    // strip everything after '\t'
+    wxStrip_Accel = 2,
+
+    // strip everything (this is the default)
+    wxStrip_All = wxStrip_Mnemonics | wxStrip_Accel
+};
+

 /**
     Strips any menu codes from @a str and returns the result.
 
 /**
     Strips any menu codes from @a str and returns the result.
 


@@ -697,7 +855,7 @@ wxString wxGetOsDescription();
     'uname -r' command); e.g. "2" and "6" if the machine is using kernel 2.6.19.
 
     For Mac OS X systems (@c wxOS_MAC) the major and minor version integers are the
     'uname -r' command); e.g. "2" and "6" if the machine is using kernel 2.6.19.
 
     For Mac OS X systems (@c wxOS_MAC) the major and minor version integers are the

-    natural version numbers associated with the OS; e.g. "10" and and "6" if the machine
+    natural version numbers associated with the OS; e.g. "10" and "6" if the machine

     is using Mac OS X Snow Leopard.    
     
     For Windows-like systems (@c wxOS_WINDOWS) the major and minor version integers will 
     is using Mac OS X Snow Leopard.    
     
     For Windows-like systems (@c wxOS_WINDOWS) the major and minor version integers will 


@@ -802,6 +960,85 @@ struct wxExecuteEnv
     wxEnvVariableHashMap env;
 };
 
     wxEnvVariableHashMap env;
 };
 

+/**
+    Bit flags that can be used with wxExecute().
+ */
+enum
+{
+    /**
+        Execute the process asynchronously.
+
+        Notice that, due to its value, this is the default.
+     */
+    wxEXEC_ASYNC    = 0,
+
+    /**
+        Execute the process synchronously.
+     */
+    wxEXEC_SYNC     = 1,
+
+    /**
+        Always show the child process console under MSW.
+
+        The child console is hidden by default if the child IO is redirected,
+        this flag allows to change this and show it nevertheless.
+
+        This flag is ignored under the other platforms.
+     */
+    wxEXEC_SHOW_CONSOLE   = 2,
+
+    /**
+        Make the new process a group leader.
+
+        Under Unix, if the process is the group leader then passing
+        wxKILL_CHILDREN to wxKill() kills all children as well as pid.
+
+        Under MSW, applies only to console applications and is only supported
+        under NT family (i.e. not under Windows 9x). It corresponds to the
+        native @c CREATE_NEW_PROCESS_GROUP and, in particular, ensures that
+        Ctrl-Break signals will be sent to all children of this process as well
+        to the process itself. Support for this flag under MSW was added in
+        version 2.9.4 of wxWidgets.
+     */
+    wxEXEC_MAKE_GROUP_LEADER = 4,
+
+    /**
+        Don't disable the program UI while running the child synchronously.
+
+        By default synchronous execution disables all program windows to avoid
+        that the user interacts with the program while the child process is
+        running, you can use this flag to prevent this from happening.
+
+        This flag can only be used with ::wxEXEC_SYNC.
+     */
+    wxEXEC_NODISABLE = 8,
+
+    /**
+        Don't dispatch events while the child process is executed.
+
+        By default, the event loop is run while waiting for synchronous
+        execution to complete and this flag can be used to simply block the
+        main process until the child process finishes
+
+        This flag can only be used with ::wxEXEC_SYNC.
+     */
+    wxEXEC_NOEVENTS = 16,
+
+    /**
+        Hide child process console under MSW.
+
+        Under MSW, hide the console of the child process if it has one,
+        even if its IO is not redirected.
+
+        This flag is ignored under the other platforms.
+     */
+    wxEXEC_HIDE_CONSOLE = 32,
+
+    /**
+        Convenient synonym for flags given system()-like behaviour.
+     */
+    wxEXEC_BLOCK = wxEXEC_SYNC | wxEXEC_NOEVENTS
+};

 /**
     Executes another program in Unix or Windows.
 
 /**
     Executes another program in Unix or Windows.
 


@@ -833,18 +1070,22 @@ struct wxExecuteEnv
     wxProcess::OnTerminate() will be called when the process finishes.
     Specifying this parameter also allows you to redirect the standard input
     and/or output of the process being launched by calling
     wxProcess::OnTerminate() will be called when the process finishes.
     Specifying this parameter also allows you to redirect the standard input
     and/or output of the process being launched by calling

-    wxProcess::Redirect(). If the child process IO is redirected, under Windows
-    the process window is not shown by default (this avoids having to flush an
-    unnecessary console for the processes which don't create any windows
-    anyhow) but a @c wxEXEC_NOHIDE flag can be used to prevent this from
-    happening, i.e. with this flag the child process window will be shown
-    normally.
+    wxProcess::Redirect().
+
+    Under Windows, when launching a console process its console is shown by
+    default but hidden if its IO is redirected. Both of these default
+    behaviours may be overridden: if ::wxEXEC_HIDE_CONSOLE is specified, the
+    console will never be shown. If ::wxEXEC_SHOW_CONSOLE is used, the console
+    will be shown even if the child process IO is redirected. Neither of these
+    flags affect non-console Windows applications or does anything under the
+    other systems.

 
     Under Unix the flag @c wxEXEC_MAKE_GROUP_LEADER may be used to ensure that
     the new process is a group leader (this will create a new session if
     needed). Calling wxKill() passing wxKILL_CHILDREN will kill this process as
     well as all of its children (except those which have started their own
 
     Under Unix the flag @c wxEXEC_MAKE_GROUP_LEADER may be used to ensure that
     the new process is a group leader (this will create a new session if
     needed). Calling wxKill() passing wxKILL_CHILDREN will kill this process as
     well as all of its children (except those which have started their own

-    session).
+    session). Under MSW, this flag can be used with console processes only and
+    corresponds to the native @c CREATE_NEW_PROCESS_GROUP flag.

 
     The @c wxEXEC_NOEVENTS flag prevents processing of any events from taking
     place while the child process is running. It should be only used for very
 
     The @c wxEXEC_NOEVENTS flag prevents processing of any events from taking
     place while the child process is running. It should be only used for very


@@ -862,9 +1103,9 @@ struct wxExecuteEnv
         string, i.e. "emacs file.txt".
     @param flags
         Must include either wxEXEC_ASYNC or wxEXEC_SYNC and can also include
         string, i.e. "emacs file.txt".
     @param flags
         Must include either wxEXEC_ASYNC or wxEXEC_SYNC and can also include

-        wxEXEC_NOHIDE, wxEXEC_MAKE_GROUP_LEADER (in either case) or
-        wxEXEC_NODISABLE and wxEXEC_NOEVENTS or wxEXEC_BLOCK, which is equal to
-        their combination, in wxEXEC_SYNC case.
+        wxEXEC_SHOW_CONSOLE, wxEXEC_HIDE_CONSOLE, wxEXEC_MAKE_GROUP_LEADER (in
+        either case) or wxEXEC_NODISABLE and wxEXEC_NOEVENTS or wxEXEC_BLOCK,
+        which is equal to their combination, in wxEXEC_SYNC case.

     @param callback
         An optional pointer to wxProcess.
     @param env
     @param callback
         An optional pointer to wxProcess.
     @param env


@@ -900,10 +1141,7 @@ long wxExecute(const wxString& command, int flags = wxEXEC_ASYNC,
         additional ones are the command parameters and the array must be
         terminated with a @NULL pointer.
     @param flags
         additional ones are the command parameters and the array must be
         terminated with a @NULL pointer.
     @param flags

-        Must include either wxEXEC_ASYNC or wxEXEC_SYNC and can also include
-        wxEXEC_NOHIDE, wxEXEC_MAKE_GROUP_LEADER (in either case) or
-        wxEXEC_NODISABLE and wxEXEC_NOEVENTS or wxEXEC_BLOCK, which is equal to
-        their combination, in wxEXEC_SYNC case.
+        Same as for wxExecute(const wxString&,int,wxProcess*) overload.

     @param callback
         An optional pointer to wxProcess.
     @param env
     @param callback
         An optional pointer to wxProcess.
     @param env


@@ -945,9 +1183,7 @@ long wxExecute(wchar_t** argv, int flags = wxEXEC_ASYNC,
     @param output
         The string array where the stdout of the executed process is saved.
     @param flags
     @param output
         The string array where the stdout of the executed process is saved.
     @param flags

-        May include wxEXEC_NOHIDE, wxEXEC_MAKE_GROUP_LEADER (in either case) or
-        wxEXEC_NODISABLE and wxEXEC_NOEVENTS or wxEXEC_BLOCK, which is equal to
-        their combination. wxEXEC_SYNC is always implicitly added to the flags.
+        Combination of flags to which ::wxEXEC_SYNC is always implicitly added.

     @param env
         An optional pointer to additional parameters for the child process,
         such as its initial working directory and environment variables. This
     @param env
         An optional pointer to additional parameters for the child process,
         such as its initial working directory and environment variables. This


@@ -983,9 +1219,7 @@ long wxExecute(const wxString& command, wxArrayString& output, int flags = 0,
     @param errors
         The string array where the stderr of the executed process is saved.
     @param flags
     @param errors
         The string array where the stderr of the executed process is saved.
     @param flags

-        May include wxEXEC_NOHIDE, wxEXEC_MAKE_GROUP_LEADER (in either case) or
-        wxEXEC_NODISABLE and wxEXEC_NOEVENTS or wxEXEC_BLOCK, which is equal to
-        their combination. wxEXEC_SYNC is always implicitly added to the flags.
+        Combination of flags to which ::wxEXEC_SYNC is always implicitly added.

     @param env
         An optional pointer to additional parameters for the child process,
         such as its initial working directory and environment variables. This
     @param env
         An optional pointer to additional parameters for the child process,
         such as its initial working directory and environment variables. This


@@ -1070,8 +1304,8 @@ unsigned long wxGetProcessId();
 
     @header{wx/utils.h}
 */
 
     @header{wx/utils.h}
 */

-int wxKill(long pid, int sig = wxSIGTERM,
-            wxKillError rc = NULL, int flags = 0);
+int wxKill(long pid, wxSignal sig = wxSIGTERM,
+            wxKillError* rc = NULL, int flags = wxKILL_NOCHILDREN);

 
 /**
     Executes a command in an interactive shell window. If no command is
 
 /**
     Executes a command in an interactive shell window. If no command is


@@ -1081,7 +1315,7 @@ int wxKill(long pid, int sig = wxSIGTERM,
 
     @header{wx/utils.h}
 */
 
     @header{wx/utils.h}
 */

-bool wxShell(const wxString& command = NULL);
+bool wxShell(const wxString& command = wxEmptyString);

 
 /**
     This function shuts down or reboots the computer depending on the value of
 
 /**
     This function shuts down or reboots the computer depending on the value of