Fix more typos in comments and wxFAIL messages

Closes https://github.com/wxWidgets/wxWidgets/pull/270

interface/wx/aui/dockart.h

@@ -78,7 +78,7 @@ enum wxAuiPaneDockArtGradients
     /// No gradient on the captions, in other words a solid colour
     wxAUI_GRADIENT_NONE = 0,
 
-    /// Vertical gradient on the captions, in other words a gradal change in colours from top to bottom
+    /// Vertical gradient on the captions, in other words a gradual change in colours from top to bottom
     wxAUI_GRADIENT_VERTICAL = 1,
 
     /// Horizontal gradient on the captions, in other words a gradual change in colours from left to right
@@ -182,7 +182,7 @@ enum wxAuiButtonId
     See also @ref overview_aui.
 
     wxAuiDockArt is the art provider: provides all drawing functionality to the
-    wxAui dock manager. This allows the dock manager to have a plugable look-and-feel.
+    wxAui dock manager. This allows the dock manager to have a pluggable look-and-feel.
 
     By default, a wxAuiManager uses an instance of this class called
     wxAuiDefaultDockArt which provides bitmap art and a colour scheme that is

interface/wx/propgrid/manager.h

@@ -132,8 +132,8 @@ public:
 
     wxPropertyGridManager inherits from wxPropertyGridInterface, and as such
     it has most property manipulation functions. However, only some of them affect
-    properties on all pages (eg. GetPropertyByName() and ExpandAll()), while some
+    properties on all pages (e.g. GetPropertyByName() and ExpandAll()), while some
-    (eg. Append()) only apply to the currently selected page.
+    (e.g. Append()) only apply to the currently selected page.
 
     To operate explicitly on properties on specific page, use
     wxPropertyGridManager::GetPage() to obtain pointer to page's
@@ -405,7 +405,7 @@ public:
         Select and displays a given page.
 
         @param index
-            Index of page being seleced. Can be -1 to select nothing.
+            Index of page being selected. Can be -1 to select nothing.
     */
     void SelectPage( int index );
 

interface/wx/propgrid/property.h

@@ -304,11 +304,11 @@ wxPG_PROP_USES_COMMON_VALUE         = 0x00020000,
 */
 wxPG_PROP_AUTO_UNSPECIFIED          = 0x00040000,
 
-/** Indicates the bit useable by derived properties.
+/** Indicates the bit usable by derived properties.
 */
 wxPG_PROP_CLASS_SPECIFIC_1          = 0x00080000,
 
-/** Indicates the bit useable by derived properties.
+/** Indicates the bit usable by derived properties.
 */
 wxPG_PROP_CLASS_SPECIFIC_2          = 0x00100000,
 

interface/wx/xrc/xmlres.h

@@ -89,7 +89,7 @@ public:
     void AddHandler(wxXmlResourceHandler* handler);
 
     /**
-       Add a new handler at the begining of the handler list.
+       Add a new handler at the beginning of the handler list.
      */
     void InsertHandler(wxXmlResourceHandler *handler);
 

tests/streams/bstream.h

@@ -112,7 +112,7 @@ protected:
         CPPUNIT_ASSERT(!stream_in.Eof());
         CPPUNIT_ASSERT(stream_in.IsOk());
 
-        // Test the stream version aswell.
+        // Test the stream version as well.
         TStreamOut &stream_out = CreateOutStream();
         (void)stream_in.Read(stream_out);
 
@@ -142,10 +142,10 @@ protected:
             // EOF behaviour is different in streams, disabled (for now?)
 
             if (m_bEofAtLastRead)
-                // EOF should only occure after the last successful get.
+                // EOF should only occur after the last successful get.
                 CPPUNIT_ASSERT_MESSAGE("Eof is detected too late.", !(stream_in.LastRead() != 1 && stream_in.Eof()));
             else
-                // EOF should only occure after a failed get.
+                // EOF should only occur after a failed get.
                 CPPUNIT_ASSERT_MESSAGE("Eof is detected too soon.", !(stream_in.LastRead() == 1 && stream_in.Eof()));
 #endif
         }
@@ -386,14 +386,14 @@ protected:
                                 // Default false.
     bool m_bSeekInvalidBeyondEnd; // if true a SeekI|O beyond the end of the stream should return wxInvalidOffset
                                   // Default true.
-    bool m_bEofAtLastRead;      // Does EOF occure at the moment the last byte is read or when read past the last byte.
+    bool m_bEofAtLastRead;      // Does EOF occur at the moment the last byte is read or when read past the last byte.
                                 // Default true.
 protected:
     TStreamIn &CreateInStream()
     {
         if (m_pCurrentIn)
         {
-            wxFAIL_MSG(wxT("Error in test case, the previouse input stream needs to be delete first!"));
+            wxFAIL_MSG(wxT("Error in test case, the previous input stream needs to be delete first!"));
         }
 
         m_pCurrentIn = DoCreateInStream();
@@ -404,7 +404,7 @@ protected:
     {
         if (m_pCurrentOut)
         {
-            wxFAIL_MSG(wxT("Error in test case, the previouse output stream needs to be delete first!"));
+            wxFAIL_MSG(wxT("Error in test case, the previous output stream needs to be delete first!"));
         }
 
         m_pCurrentOut = DoCreateOutStream();

tests/strings/vsnprintf.cpp

@@ -173,7 +173,7 @@ private:
     void WrongFormatStrings();
 
     // compares the expectedString and the result of wxVsnprintf() char by char
-    // for all its lenght (not only for first expectedLen chars) and also
+    // for all its length (not only for first expectedLen chars) and also
     // checks the return value
     void DoMisc(int expectedLen, const wxString& expectedString,
                 size_t max, const wxChar *format, ...);