[PATCH] user32: Fix error handling in MapWindowPoints, ClientToScreen and ScreenToClient and add tests for them. (try 2)

[Rico Schüller]

I think we also need a test to prove that "return MapWindowPoints( hwnd, 
0, lppnt, 1 ) != 0;" is wrong. I'd probably split the changes to 
ScreenToClient/ClientToScreen and MapWindowPoints, because they are not 
necessarily bound together.

What about something like:
wnd2 = CreateWindow("static", "wnd2", WS_POPUP, 0, 0, 150, 150, NULL, 
NULL, NULL, NULL);
ok(wnd2 != NULL, "CreateWindow failed\n");
SetLastError(0xdeadbeef);
p.x = p.y = 0;
ret = ScreenToClient(wnd2, &p);
err = GetLastError();
ok(ret, "ScreenToClient() failed\n");
ok(p.x == 0 && p.y == 0, "Failed got(%d, %d), expected (%d, %d)\n", p.x, 
p.y, 0, 0);
ok(err == 0xdeadbeef, "GetLastError failed, got %x, expected %x\n", err, 
0xdeadbeef);

Also msdn says: "Do not use ScreenToClient when in a mirroring 
situation, that is, when changing from left-to-right layout to 
right-to-left layout. Instead, use MapWindowPoints. For more 
information, see "Window Layout and Mirroring" in Window Features." We 
may also check that case. So they may not share the exact same steps.

Cheers
Rico

On 20.10.2012 12:27, Christian Costa wrote:
> Based ont a patch of Rico Schuller.
>
> Try 2:
>    - Test window handle in ClienToScreen and ScreenToClient instead of relying on GetLastError().
>    - Don't rename params.
> ---
>   dlls/user32/tests/win.c |  213 +++++++++++++++++++++++++++++++++++++++++++++++
>   dlls/user32/winpos.c    |   28 +++++-
>   2 files changed, 237 insertions(+), 4 deletions(-)