Always send an erase event to satisfy some users...

[wxWidgets.git] / docs / microwin / readme.txt

diff --git a/docs/microwin/readme.txt b/docs/microwin/readme.txt
index c2572f3d0a44c1996a68cca8e7a0f2799b75cd73..e916ced79455097180c49bebf18ac1632bd7b65f 100644 (file)
--- a/docs/microwin/readme.txt
+++ b/docs/microwin/readme.txt
@@ -83,8 +83,12 @@ they are one and the same binary.
 Status
 ======
 
-The minimal sample is almost fully-functional, apart from minor
-menu presentation issues (no borders, for example).
+The minimal sample is almost fully-functional, apart from some
+presentation issues (no menu borders and status bar in the wrong
+place.
+
+The widgets sample is crashing in DeleteObject (see notes below).
+
 
 Implementation Notes
 ====================
@@ -103,6 +107,34 @@ in due course. But implementing missing functionality in this way
 is preferably to proliferating many #ifdefs in the
 wxMSW/wxMicroWindows port itself.
 
+
+Errors/warnings
+===============
+
+In file ../../src/msw/window.cpp at line 1294: 'UpdateWindow' failed with error 0x00000000 (Success).
+
+  - caused because there are no paint messages pending. Presumed
+    harmless.
+
+In file ../../src/msw/dc.cpp at line 1838: 'BitBlt' failed with error 0x00000000 (Success).
+
+  - caused because the window isn't mapped, and MwPrepareDC in wingdi.c
+    fails (hwnd->unmapcount is non-zero). Presumed harmless.
+
+Recursive paint problem, e.g. when clicking the 'Press Me!'
+button in the widgets sample a few times, until the text control
+is full.
+
+  - possibly the scrollbar is causing the text control to be
+    updated, which somehow effects the scrollbar, which causes
+    a window update, etc.
+
+Sluggish updates.
+
+  - probably because many image to bitmap conversions are being
+    done on update, and bitmaps should probably be cached.
+
+
 Things missing from MicroWindows that need to be worked around
 ==============================================================
 
@@ -131,6 +163,11 @@ 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.
+This is now implemented, but there are problems with masks.
+(a) masks have to be created at screen depth because BitBlt/GrDraw
+can't cope with differing depths, and (b) masked blitting
+is still not working (try enabling mask creation in
+wxBitmap::CreateFromImage by setting USE_MASKS to 1).
 
 
 Other missing features