merging in Václav's fix for getting CPU usage down in ShowModal

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75779 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
correction on commit 75776

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75782 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Added support for wxEVT_COMBOBOX_DROPDOWN and wxEVT_COMBOBOX_CLOSEUP events to wxOSX/Cocoa.

See #15762.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75783 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix transparency in toolbar buttons when not using comctl32.dll v6.

Old versions of comctl32.dll don't support alpha in the toolbar image list, so
use the masks only for them.

Closes #2609.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75785 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Allow using wxRearrangeList::Check() to change state programmatically.

Previous this resulted in an assert and broken behaviour as it didn't update
the internally stored state. Do update it now and remove the assert as it
isn't possible to distinguish between user code calling Check() and wxGTK
doing it itself from wxCheckListBox implementation.

Closes #15940.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75786 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Add new XRC headers to the core project too.

Closes #15942.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75787 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Add XRC handler file to MSVC 10 project.

Closes #15942.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75788 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Added the ability to restore the last selected page in a wxRTC formatting dialog.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75791 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Return true from OnCellClicked if the event was processed, otherwise further processing will use default behaviour which may negate the effect of the event handler.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75793 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Compilation fix for PCH-less build.

This should fix compilation without PCH after r75785.

See #2609.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75794 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775