Fix setting colours for the edit control part of wxComboBox.

Recognize this control as part of wxComboBox and so handle WM_CTLCOLOR for it.

To do this, override ContainsHWND() in wxComboBox and use it, on the parent
window, in wxControl::DoMSWControlColor(), if we fail to find the window
directly.

Closes #811.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72468 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix "pos" argument description in wxTreeCtrl::InsertItem() documentation.

Closes #14640.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72469 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix wxFindWindowAtPoint() with nested windows in wxMSW.

Return the deepest child of the window and not the first one as this function
needs to return the window that is at the top of Z-order.

Closes #14591.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72470 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Don't initialize alpha twice when loading wxImage from resources.

Calling InitAlpha() when we already had loaded alpha from the resource data
results in an assert. Fix this by only initializing alpha if don't have it
yet.

Closes #14643.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72471 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Change wxMSW-specific wxLoadUserResource() to accept standard RT_XXX types.

Resource types can be either strings for custom types or integers casted to a
TCHAR* for the standard ones. Using wxString for the resource type prevented
us from using the latter as any attempt to initialize wxString for such a
pseudo-string resulted in an immediate crash.

Change wxLoadUserResource() resource type parameter type to wxChar* to avoid
this and allow passing standard resource types, such as RT_RCDATE, to this
function directly.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72472 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Provide up to date documentation for wxLoadUserResource().

Document the new and preferred overload avoiding copying the data. Also
document the new (since 2.9.1) parameters of the old one.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72473 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Extract "Close" button creation from wxInfoBarGeneric into new function.

Such buttons may be needed in other places and it's not obvious to create
them, so add a new public wxBitmapButton::NewCloseButton() method to allow
creating them easily.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72474 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Don't ignore invalid files entered into wxFileDirPickerCtrlBase.

File/directory picker controls with wxFLP_FILE_MUST_EXIST/wxDIRP_DIR_MUST_EXIST
style simply ignored any value entered by user if it didn't correspond to an
existing file/directory. This meant that the program didn't use the value that
was shown on the screen resulting in very confusing UI -- e.g. a program could
complain that no value was entered when actually it was and just corresponded
to a non-existing file.

As we can't prevent the entry of arbitrary strings in the text field of the
file picker control, stop pretending that we can validate it and just update
the control value, and send the corresponding event, whenever the text control
value changes.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72475 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Add wxBitmap::NewFromPNGData() for creating bitmaps from PNG data.

This simple function can be used to create a wxBitmap from the raw image data
in PNG format. It is just a thin wrapper around wxImage load functions under
almost all platforms but has two advantages:

1. It can be implemented natively for some platforms (currently only OS X).
2. It can be used in a single expression as it doesn't require creating a
   temporary wxMemoryInputStream and this will be required by wxBITMAP_PNG()
   macro that will be added soon.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72476 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Add wxBITMAP_PNG() macro similar to wxBITMAP() but for PNG images.

Just as wxBITMAP() provides a portable way of loading bitmaps from either
Windows BMP resources or embedded XPM data depending on the platform,
wxBITMAP_PNG() hides the difference between loading bitmaps from PNG resources
under Windows and embedded PNG data elsewhere.

Also add wxBITMAP_PNG_FROM_DATA() macro which always loads PNG data from
memory: it's needed anyhow as part of wxBITMAP_PNG() implementation and some
people may prefer to always use it under all platforms.

Finally modify the image sample to demonstrate loading PNG images from both
resources and memory. This involved creation of a new Windows .rc file for it
and copying its data files to Resources bundle directory under OS X.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72477 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
No changes, just remove unneeded variable initialziation in wxAUI.

Initialize the variables to the correct values when defining them instead of
initializing them as 0 first and then assigning them the real value.

Closes #14652.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72478 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Relax wxMessageDialog style checks, assume wxOK by default.

Don't complain if neither wxOK nor wxYES[_NO] are specified but just assume
wxOK by default. This allows the code calling wxMessageBox() with just an icon
flag to continue to work in the same way in 2.9 as it did in 2.8.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72479 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775