14 references to IsNull
System.Windows.Forms (14)
System\Windows\Forms\Controls\PropertyGrid\PropertyGridInternal\PropertyGridView.MouseHook.cs (5)
39
if (!_mouseHookHandle.
IsNull
)
60
get => !_mouseHookHandle.
IsNull
;
83
if (!_mouseHookHandle.
IsNull
)
101
Debug.Assert(!_mouseHookHandle.
IsNull
, "Failed to install mouse hook");
144
if (!_mouseHookHandle.
IsNull
)
System\Windows\Forms\Controls\ToolStrips\ToolStripManager.ModalMenuFilter.HostedWindowsFormsMessageHook.cs (3)
41
get => !_messageHookHandle.
IsNull
;
59
if (!_messageHookHandle.
IsNull
)
105
if (!_messageHookHandle.
IsNull
)
System\Windows\Forms\SendKeys\SendKeys.cs (6)
221
if (s_hhook.
IsNull
)
230
if (s_hhook.
IsNull
)
248
s_hookSupported = !hookHandle.
IsNull
;
250
if (!hookHandle.
IsNull
)
300
if (!s_hhook.
IsNull
)
1003
if (!s_hhook.
IsNull
)