don't place NULL pointers in the GDK window array in GTKGetWindow()

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

diff --git a/interface/wx/progdlg.h b/interface/wx/progdlg.h
index 1c56dd98adc74c5ed0d0730cf353b3cb7973e9d6..9933e795a1896103af80f8891f9436534812e411 100644 (file)
--- a/interface/wx/progdlg.h
+++ b/interface/wx/progdlg.h
@@ -10,9 +10,16 @@
     @class wxProgressDialog
 
     This class represents a dialog that shows a short message and a
-    progress bar. Optionally, it can display ABORT and SKIP buttons,
+    progress bar. Optionally, it can display ABORT and SKIP buttons, and
     the elapsed, remaining and estimated time for the end of the progress.
 
+    Note that you must be aware that wxProgressDialog internally calls
+    wxEventLoopBase::YieldFor with @c wxEVT_CATEGORY_UI and @c wxEVT_CATEGORY_USER_INPUT
+    and this may cause unwanted re-entrancies or the out-of-order processing
+    of pending events (to help preventing the last problem if you're using
+    wxProgressDialog in a multi-threaded application you should be sure to use
+    wxThreadEvent for your inter-threads communications).
+
     @beginStyleTable
     @style{wxPD_APP_MODAL}
            Make the progress dialog modal. If this flag is not given, it is
@@ -21,8 +28,13 @@
     @style{wxPD_AUTO_HIDE}
            Causes the progress dialog to disappear from screen as soon as the
            maximum value of the progress meter has been reached.
+           If this style is not present, the dialog will become a modal dialog
+           (see wxDialog::ShowModal) once the maximum value has been reached;
+           this results in processing of pending events and may cause
+           unwanted re-entrancies.
     @style{wxPD_SMOOTH}
-           Causes smooth progress of the gauge control.
+           Causes smooth progress of the gauge control (uses a wxGauge with the
+           @c wxGA_SMOOTH style).
     @style{wxPD_CAN_ABORT}
            This flag tells the dialog that it should have a "Cancel" button
            which the user may press. If this happens, the next call to
@@ -57,6 +69,8 @@ public:
             Message displayed above the progress bar.
         @param maximum
             Maximum value for the progress bar.
+            In the generic implementation the progress bar is constructed
+            only if this value is greater than zero.
         @param parent
             Parent window.
         @param style
@@ -73,10 +87,39 @@ public:
     virtual ~wxProgressDialog();
 
     /**
-        Works like Update() but makes the gauge control run in indeterminate mode
-        (see wxGauge documentation); sets the remaining and the estimated time labels
-        (if present) to "Unknown" or to @a newmsg (if it's non-empty); moves the progress
-        bar a bit to indicate that some progress was done.
+        Returns the last value passed to the Update() function or
+        @c wxNOT_FOUND if the dialog has no progress bar.
+
+        @since 2.9.0
+    */
+    int GetValue() const;
+
+    /**
+        Returns the maximum value of the progress meter, as passed to
+        the constructor or @c wxNOT_FOUND if the dialog has no progress bar.
+
+        @since 2.9.0
+    */
+    int GetRange() const;
+
+    /**
+        Returns the last message passed to the Update() function;
+        if you always passed wxEmptyString to Update() then the message
+        set through the constructor is returned.
+
+        @since 2.9.0
+    */
+    wxString GetMessage() const;
+
+    /**
+        Like Update() but makes the gauge control run in indeterminate mode.
+
+        In indeterminate mode the remaining and the estimated time labels (if
+        present) are set to to "Unknown" or to @a newmsg (if it's non-empty).
+        Each call to this function moves the progress bar a bit to indicate
+        that some progress was done.
+
+        @see wxGauge::Pulse(), Update()
     */
     virtual bool Pulse(const wxString& newmsg = wxEmptyString, bool* skip = NULL);
 
@@ -86,18 +129,24 @@ public:
     void Resume();
 
     /**
-        Updates the dialog, setting the progress bar to the new value and, if
-        given changes the message above it. Returns @true unless the "Cancel" button
-        has been pressed.
+        Updates the dialog, setting the progress bar to the new value and
+        updating the message if new one is specified.
+
+        Returns @true unless the "Cancel" button has been pressed.
 
         If @false is returned, the application can either immediately destroy the
         dialog or ask the user for the confirmation and if the abort is not confirmed
         the dialog may be resumed with Resume() function.
 
+        Notice that you may want to call Fit() to change the dialog size to
+        conform to the length of the new message if desired. The dialog does
+        not do this automatically.
+
         @param value
             The new value of the progress meter. It should be less than or equal to
-            the maximum value given to the constructor and the dialog is closed if
-            it is equal to the maximum.
+            the maximum value given to the constructor.
+            See @c wxPD_AUTO_HIDE style for more info about the behaviour of
+            wxProgressDialog when @a value is the maximum value given in the ctor.
         @param newmsg
             The new messages for the progress dialog text, if it is
             empty (which is the default) the message is not changed.
@@ -105,7 +154,7 @@ public:
             If "Skip" button was pressed since last Update() call,
             this is set to @true.
     */
-    virtual bool Update(int value, const wxString& newmsg = "",
+    virtual bool Update(int value, const wxString& newmsg = wxEmptyString,
                         bool* skip = NULL);
 };