Use TLW parent for wxMessageDialog in all ports.

This avoids problems with deleting child windows which are parents of
wxMessageDialog before the dialog itself is destroyed and was already done in
wxGTK, but not in wxMSW nor wxOSX. Do it in all ports now by calling
GetParentForModalDialog() from wxMessageDialogBase ctor itself instead of
depending on the port-specific wxMessageDialog to do it.

Closes #16631.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78034 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Work around unavailability of std::exception_ptr with some g++ versions.

g++ headers only provide std::exception_ptr when __GCC_ATOMIC_INT_LOCK_FREE is
2, indicating that atomic operations on int are available, so check for this
before setting HAS_EXCEPTION_PTR as in some MinGW builds (TDM gcc 4.7) this
symbol is not defined as 2.

Closes #16634.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78035 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Handle taskbar button recreation better in wxMSW.

Store the various parameters in wxTaskBarButton itself and reapply them when
the button is (re)created. This fixes problems with getting the "taskbar
button created" message twice, e.g. because Explorer was restarted, or getting
it too late, as now wxTaskBarButton can be configured both before and after
receiving this message.

Closes #16566.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78036 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix memory leak in richtext sample.

Destroy the children of wxRichTextFieldTypeCompositeTest when updating it
instead of just clearing the list and leaking the objects in it.

Closes #14324.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78037 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix creating wxBitmap from monochrome icon or cursor in wxMSW.

Handle the "AND" and "XOR" masks inside monochrome icons/cursors correctly
instead of simply copying the monochrome data which didn't work at all.

See #16512.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78038 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Don't replace bitmap transparency with black when converting to icon in wxMSW.

This was a wrong workaround for incorrect drawing of the icons elsewhere and
isn't needed if the destination is first AND-ed with the mask, as it should be.

See #16512.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78039 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Use MaskBlt() with the correct ROP when drawing bitmaps with mask.

We need to AND the destination with the mask first and then XOR it with the
bitmap data to achieve the correct results.

Closes #16512.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78040 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Make main thread wake up code more efficient and less error-prone in wxMSW.

Use a kernel event object to signal the thread wake up instead of sending
WM_NULL to one of its windows. This is simpler as we don't need to look for
any windows and doesn't suffer from the problem of overflowing the Windows
message queue if we do it too many times as signalling an already signalled
event simply doesn't do anything.

Closes #9053.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78041 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Update the bundled Scintilla version to 3.4.1.

There are relatively few changes, see Scintilla changelog at
http://www.scintilla.org/ScintillaHistory.html

Closes #16182.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78042 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Only select the first radio button if there is one in wxMSW wxRadioBox.

Don't call SetSelection(0) if the radio box is empty.

See #16630.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78043 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Don't leave wxSubwindows::m_ids uninitialized.

Normally it's initialized by calling Create(), but don't crash deleting an
invalid pointer in the dtor if Create() hadn't been called.

See #16630.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78044 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775