Intercept 'help' key presses and clear the NSHelpKeyMask modifier flag

git-svn-id: http://macvim.googlecode.com/svn/trunk@194 96c4425d-ca35-0410-94e5-3396d5c13a8f

MMApplication.h

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+/* vi:set ts=8 sts=4 sw=4 ft=objc:
+ *
+ * VIM - Vi IMproved		by Bram Moolenaar
+ *				MacVim GUI port by Bjorn Winckler
+ *
+ * Do ":help uganda"  in Vim to read copying and usage conditions.
+ * Do ":help credits" in Vim to see a list of people who contributed.
+ * See README.txt for an overview of the Vim source code.
+ */
+
+#import <Cocoa/Cocoa.h>
+#import "MacVim.h"
+
+
+@interface MMApplication : NSApplication {
+}
+
+@end

MMApplication.m

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+/* vi:set ts=8 sts=4 sw=4 ft=objc:
+ *
+ * VIM - Vi IMproved		by Bram Moolenaar
+ *				MacVim GUI port by Bjorn Winckler
+ *
+ * Do ":help uganda"  in Vim to read copying and usage conditions.
+ * Do ":help credits" in Vim to see a list of people who contributed.
+ * See README.txt for an overview of the Vim source code.
+ */
+
+#import "MMApplication.h"
+
+
+
+
+@implementation MMApplication
+
+- (void)sendEvent:(NSEvent *)event
+{
+    NSEventType type = [event type];
+    unsigned flags = [event modifierFlags];
+
+    // HACK! Intercept 'help' key presses and clear the 'help key flag', else
+    // Cocoa turns the mouse cursor into a question mark and goes into 'context
+    // help mode' (the keyDown: event itself never reaches the text view).  By
+    // clearing the 'help key flag' this event will be treated like a normal
+    // key event.
+    if ((NSKeyDown == type || NSKeyUp == type) && (flags & NSHelpKeyMask)) {
+        flags &= ~NSHelpKeyMask;
+        event = [NSEvent keyEventWithType:[event type]
+                                 location:[event locationInWindow]
+                            modifierFlags:flags
+                                timestamp:[event timestamp]
+                             windowNumber:[event windowNumber]
+                                  context:[event context]
+                               characters:[event characters]
+              charactersIgnoringModifiers:[event charactersIgnoringModifiers]
+                                isARepeat:[event isARepeat]
+                                  keyCode:[event keyCode]];
+    }
+
+    [super sendEvent:event];
+}
+
+@end