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now synthesizing key release events for each pressed key when

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the client screen is closed.  this fixes the bug where the
client's keyboard was left with some keys logically pressed
when the client died (e.g. using ctrl+c on the client program
from the server's keyboard would leave the ctrl key logically
pressed).
This commit is contained in:
crs
2002-07-01 13:03:16 +00:00
parent a0eba4c337
commit e267d1dc1c
5 changed files with 82 additions and 2 deletions
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54
client/CMSWindowsSecondaryScreen.cpp
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@@ -111,6 +111,9 @@ CMSWindowsSecondaryScreen::close()
{
assert(m_client != NULL);
// release keys that are logically pressed
releaseKeys();
// restore the screen saver settings
getScreenSaver()->enable();
@@ -1698,6 +1701,57 @@ CMSWindowsSecondaryScreen::doKeystrokes(const Keystrokes& keys, SInt32 count)
}
}
void
CMSWindowsSecondaryScreen::releaseKeys()
{
CLock lock(&m_mutex);
syncDesktop();
// release left/right modifier keys first. if the platform doesn't
// support them then they won't be set and the non-side-distinuishing
// key will retain its state. if the platform does support them then
// the non-side-distinguishing will be reset.
if ((m_keys[VK_LSHIFT] & 0x80) != 0) {
sendKeyEvent(VK_LSHIFT, false);
m_keys[VK_SHIFT] = 0;
m_keys[VK_LSHIFT] = 0;
}
if ((m_keys[VK_RSHIFT] & 0x80) != 0) {
sendKeyEvent(VK_RSHIFT, false);
m_keys[VK_SHIFT] = 0;
m_keys[VK_RSHIFT] = 0;
}
if ((m_keys[VK_LCONTROL] & 0x80) != 0) {
sendKeyEvent(VK_LCONTROL, false);
m_keys[VK_CONTROL] = 0;
m_keys[VK_LCONTROL] = 0;
}
if ((m_keys[VK_RCONTROL] & 0x80) != 0) {
sendKeyEvent(VK_RCONTROL, false);
m_keys[VK_CONTROL] = 0;
m_keys[VK_RCONTROL] = 0;
}
if ((m_keys[VK_LMENU] & 0x80) != 0) {
sendKeyEvent(VK_LMENU, false);
m_keys[VK_MENU] = 0;
m_keys[VK_LMENU] = 0;
}
if ((m_keys[VK_RMENU] & 0x80) != 0) {
sendKeyEvent(VK_RMENU, false);
m_keys[VK_MENU] = 0;
m_keys[VK_RMENU] = 0;
}
// now check all the other keys
for (UInt32 i = 0; i < sizeof(m_keys) / sizeof(m_keys[0]); ++i) {
if ((m_keys[i] & 0x80) != 0) {
sendKeyEvent(i, false);
m_keys[i] = 0;
}
}
}
void
CMSWindowsSecondaryScreen::updateKeys()
{