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MicroWindows tweaks

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13145 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Julian Smart
2001-12-21 17:01:02 +00:00
parent d2913c40ab
commit e640f8231f
8 changed files with 262 additions and 46 deletions
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37
docs/microwin/readme.txt
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@@ -106,17 +106,40 @@ wxMSW/wxMicroWindows port itself.
Things missing from MicroWindows that need to be worked around
==============================================================
wxImage/inline XPM/::CreateBitmap support
-----------------------------------------
This is the main obstacle to getting a good range
of widgets working, since wxUniversal uses inline XPMs
to implement most of the widgets.
See src/engine/devimage.c for routines for loading JPEGs,
XPMs etc. Unfortunately the XPM routines are also #ifdefed
for FILE_IO, even though for inline XPMs we don't need file I/O.
(Embedded systems tend not to have file I/O, anyway.)
Now, wxWindows has its own XPM decoder, src/common/xpmdecod.cpp,
so in theory we don't need to use MicroWindows' code there.
wxImage can load an inline XPM, _but_ we need to convert to
a wxBitmap since this is what the widgets need.
There is no ::CreateBitmap or BITMAPINFO. (BMPs can be converted
to C using convbmp, then need to use Gr... functions.)
So how can we convert from wxImage to wxBitmap in MicroWindows?
Well, a simple-minded way would be to use CreateCompatibleBitmap
which returns an HBITMAP, select it into an HDC, and draw
the pixels from the wxImage to the HDC one by one with SetPixel.
Other missing features
----------------------
No ::GetKeyState (see include/wx/msw/private.h). Should probably use
GdOpenKeyboard/GdCloseKeyboard/GdReadKeyboard. Could perhaps emulate
GetKeyState this way.
No ::CreateBitmap or BITMAPINFO. But BMPs can be converted
to C using convbmp, then need to use Gr... functions.
We MUST implement creation from XPMs, since wxUniversal
makes use of XPMs, or else create our own bitmaps for
drawing radioboxes, checkboxes etc.: see renderers
in src/univ.
No ::DestroyIcon, ::DestroyCursor - use ::DestroyObject instead?
Also no LoadCursor, LoadImage. So how do we make cursors? No ::SetCursor.