Alex Villacís Lasso escribió:
I am currently trying to clean up the riched20 tests that are failing in WinXP. While doing this, I have encountered the following problem: on the function test_WM_PASTE() (at line 1959 of dlls/riched20/tests/editor.c in current git), the test is supposed to feed simulated keystrokes corresponding to Ctrl-C, Ctrl-V, and so on, supposedly to test copy and paste features via the keyboard. The problem is that the verification at line 1989 fails on WinXP, because the text on the control has not been modified - the control seems to disregard simulated WM_CHAR messages of the Ctrl-<keystroke> variety. The test at line 1977 succeeds accidentally, because the sequence of Ctrl-C, Ctrl-V, Ctrl-Z that is being tested is equivalent to not modifying the control text at all.
A more through test would be to send WM_GETTEXT messages after each step to ensure that the text is actually being modified, but the bigger problem is how to make the control obey the keystrokes in the first place. If I place a message loop right before the DestroyWindow() call, I can send keystrokes manually and they work as expected. Only simulated WM_CHAR messages are being discarded.
I have tried changing the SendMessage() calls into PostMessage() calls (since Visual Studio's Spy++ shows that WM_CHAR messages were posted, not sent), but to no avail. I have also tried placing message loops between messages, with no luck. I have even tried to simulate the WM_KEYDOWN and WM_KEYUP messages with parameters exactly as seen by Spy++, but this does not work either. So I am asking for help. What could be going wrong with this test? How can I feed the expected keystrokes so that the test works as expected? Has this test ever worked before? It fails in both WinXP (real machine) and inside a QEMU session running Win98.
(All tests on WinXP were compiled with CygWin)
Any thoughts on this? Do I need to supply more information in order to diagnose the problem?