- Generated by
1.9.1
|
Mac OS 9
|
Event Manager Interfaces. More...
Go to the source code of this file.
Data Structures | |
| struct | EventRecord |
| struct | EvQEl |
Macros | |
| #define | NewFKEYUPP(userRoutine) |
| #define | DisposeFKEYUPP(userUPP) DisposeRoutineDescriptor(userUPP) |
| #define | InvokeFKEYUPP(userUPP) CALL_ZERO_PARAMETER_UPP((userUPP), uppFKEYProcInfo) |
| #define | NewFKEYProc(userRoutine) NewFKEYUPP(userRoutine) |
| #define | CallFKEYProc(userRoutine) InvokeFKEYUPP(userRoutine) |
| #define | NewGetNextEventFilterUPP(userRoutine) |
| #define | DisposeGetNextEventFilterUPP(userUPP) DisposeRoutineDescriptor(userUPP) |
| #define | InvokeGetNextEventFilterUPP(theEvent, result, userUPP) |
| #define | NewGetNextEventFilterProc(userRoutine) NewGetNextEventFilterUPP(userRoutine) |
| #define | CallGetNextEventFilterProc(userRoutine, theEvent, result) InvokeGetNextEventFilterUPP(theEvent, result, userRoutine) |
Typedefs | |
| typedef UInt16 | EventKind |
| typedef UInt16 | EventMask |
| typedef UInt16 | EventModifiers |
| typedef struct EventRecord | EventRecord |
| typedef BigEndianLong | KeyMap[4] |
| typedef UInt8 | KeyMapByteArray[16] |
| typedef struct EvQEl | EvQEl |
| typedef EvQEl * | EvQElPtr |
| typedef GetNextEventFilterUPP | GNEFilterUPP |
| typedef struct OpaqueEventRef * | EventRef |
Enumerations | |
| enum | { nullEvent = 0 , mouseDown = 1 , mouseUp = 2 , keyDown = 3 , keyUp = 4 , autoKey = 5 , updateEvt = 6 , diskEvt = 7 , activateEvt = 8 , osEvt = 15 , kHighLevelEvent = 23 } |
| enum | { mDownMask = 1 << mouseDown , mUpMask = 1 << mouseUp , keyDownMask = 1 << keyDown , keyUpMask = 1 << keyUp , autoKeyMask = 1 << autoKey , updateMask = 1 << updateEvt , diskMask = 1 << diskEvt , activMask = 1 << activateEvt , highLevelEventMask = 0x0400 , osMask = 1 << osEvt , everyEvent = 0xFFFF } |
| enum | { charCodeMask = 0x000000FF , keyCodeMask = 0x0000FF00 , adbAddrMask = 0x00FF0000 , osEvtMessageMask = (unsigned long)0xFF000000 } |
| enum | { mouseMovedMessage = 0x00FA , suspendResumeMessage = 0x0001 } |
| enum | { resumeFlag = 1 } |
| enum | { convertClipboardFlag } |
| enum | { activeFlagBit = 0 , btnStateBit = 7 , cmdKeyBit = 8 , shiftKeyBit = 9 , alphaLockBit = 10 , optionKeyBit = 11 , controlKeyBit = 12 , rightShiftKeyBit = 13 , rightOptionKeyBit = 14 , rightControlKeyBit = 15 } |
| enum | { activeFlag = 1 << activeFlagBit , btnState = 1 << btnStateBit , cmdKey = 1 << cmdKeyBit , shiftKey = 1 << shiftKeyBit , alphaLock = 1 << alphaLockBit , optionKey = 1 << optionKeyBit , controlKey = 1 << controlKeyBit , rightShiftKey = 1 << rightShiftKeyBit , rightOptionKey = 1 << rightOptionKeyBit , rightControlKey = 1 << rightControlKeyBit } |
| enum | { kNullCharCode = 0 , kHomeCharCode = 1 , kEnterCharCode = 3 , kEndCharCode = 4 , kHelpCharCode = 5 , kBellCharCode = 7 , kBackspaceCharCode = 8 , kTabCharCode = 9 , kLineFeedCharCode = 10 , kVerticalTabCharCode = 11 , kPageUpCharCode = 11 , kFormFeedCharCode = 12 , kPageDownCharCode = 12 , kReturnCharCode = 13 , kFunctionKeyCharCode = 16 , kCommandCharCode = 17 , kCheckCharCode = 18 , kDiamondCharCode = 19 , kAppleLogoCharCode = 20 , kEscapeCharCode = 27 , kClearCharCode = 27 , kLeftArrowCharCode = 28 , kRightArrowCharCode = 29 , kUpArrowCharCode = 30 , kDownArrowCharCode = 31 , kSpaceCharCode = 32 , kDeleteCharCode = 127 , kBulletCharCode = 165 , kNonBreakingSpaceCharCode = 202 } |
| enum | { kShiftUnicode = 0x21E7 , kControlUnicode = 0x2303 , kOptionUnicode = 0x2325 , kCommandUnicode = 0x2318 , kPencilUnicode = 0x270E , kCheckUnicode = 0x2713 , kDiamondUnicode = 0x25C6 , kBulletUnicode = 0x2022 , kAppleLogoUnicode = 0xF8FF } |
| enum | { uppFKEYProcInfo = 0x00000000 } |
| enum | { networkEvt = 10 , driverEvt = 11 , app1Evt = 12 , app2Evt = 13 , app3Evt = 14 , app4Evt = 15 , networkMask = 0x0400 , driverMask = 0x0800 , app1Mask = 0x1000 , app2Mask = 0x2000 , app3Mask = 0x4000 , app4Mask = 0x8000 } |
| enum | { uppGetNextEventFilterProcInfo = 0x000000BF } |
Functions | |
| typedef | CALLBACK_API (void, FKEYProcPtr)(void) |
| typedef | STACK_UPP_TYPE (FKEYProcPtr) FKEYUPP |
| FKEYUPP | NewFKEYUPP (FKEYProcPtr userRoutine) |
| void | DisposeFKEYUPP (FKEYUPP userUPP) |
| void | InvokeFKEYUPP (FKEYUPP userUPP) |
| void | GetMouse (Point *mouseLoc) |
| Boolean | Button (void) |
| Boolean | StillDown (void) |
| Boolean | WaitMouseUp (void) |
| UInt32 | KeyTranslate (const void *transData, UInt16 keycode, UInt32 *state) |
| UInt32 | GetCaretTime (void) |
| Obtain insertion-point cursor blink interval. More... | |
| void | GetKeys (KeyMap theKeys) |
| typedef | CALLBACK_API_REGISTER68K (void, GetNextEventFilterProcPtr,(EventRecord *theEvent, Boolean *result)) |
| typedef | REGISTER_UPP_TYPE (GetNextEventFilterProcPtr) GetNextEventFilterUPP |
| GetNextEventFilterUPP | NewGetNextEventFilterUPP (GetNextEventFilterProcPtr userRoutine) |
| void | DisposeGetNextEventFilterUPP (GetNextEventFilterUPP userUPP) |
| void | InvokeGetNextEventFilterUPP (EventRecord *theEvent, Boolean *result, GetNextEventFilterUPP userUPP) |
| if (theEvent.what==keyDown) | |
| Find max delay between clicks of a double click. More... | |
| EventLoop () | |
| DAs wanting a timeslice every so often should set bit of the drvrFlags word and a tick count in drvrDelay in the driver header You should not depend on any particular since an application may fail to call SystemTask often | enough (e.g., when saving a file) .To receive periodic timeslices with more accuracy |
| Boolean | SystemEvent (const EventRecord *theEvent) |
| Used internally by Event Manager. More... | |
| void | GetGlobalMouse (Point *globalMouse) |
| UInt32 | GetCurrentKeyModifiers (void) |
| Boolean | CheckEventQueueForUserCancel (void) |
| void | KeyScript (short code) |
| Boolean | IsCmdChar (const EventRecord *event, short test) |
| SInt16 | LMGetKeyThresh (void) |
| void | LMSetKeyThresh (SInt16 value) |
| SInt16 | LMGetKeyRepThresh (void) |
| void | LMSetKeyRepThresh (SInt16 value) |
| UInt8 | LMGetKbdLast (void) |
| void | LMSetKbdLast (UInt8 value) |
| UInt8 | LMGetKbdType (void) |
| void | LMSetKbdType (UInt8 value) |
Variables | |
| DAs wanting a timeslice every so often should set bit of the drvrFlags word and a tick count in drvrDelay in the driver header You should not depend on any particular | accuracy |
| DAs wanting a timeslice every so often should set bit of the drvrFlags word and a tick count in drvrDelay in the driver header You should not depend on any particular since an application may fail to call SystemTask often install a vertical retrace task via VInstall or a timer interrupt task via InsTime</pre > *par | Copyright |
Event Manager Interfaces.
For bug reports, consult the following page on the World Wide Web:
http://developer.apple.com/bugreporter/
| #define InvokeGetNextEventFilterUPP | ( | theEvent, | |
| result, | |||
| userUPP | |||
| ) |
| #define NewFKEYProc | ( | userRoutine | ) | NewFKEYUPP(userRoutine) |
CALL_NOT_IN_CARBON support for pre-Carbon UPP routines: New...Proc and Call...Proc
| #define NewFKEYUPP | ( | userRoutine | ) |
pascal no_return_value Func()
| #define NewGetNextEventFilterProc | ( | userRoutine | ) | NewGetNextEventFilterUPP(userRoutine) |
CALL_NOT_IN_CARBON support for pre-Carbon UPP routines: New...Proc and Call...Proc
| #define NewGetNextEventFilterUPP | ( | userRoutine | ) |
| typedef UInt16 EventKind |
!TARGET_OS_MAC || !TARGET_API_MAC_OS8
| typedef UInt16 EventModifiers |
CALL_NOT_IN_CARBON CARBON ALERT! BATTLESTATIONS!
The EventModifiers bits defined here are also used in the newer Carbon Event key modifiers parameters. There are two main differences:
1) The Carbon key modifiers parameter is a UInt32, not a UInt16. Never try to extract the key modifiers parameter from a Carbon Event into an EventModifiers type. You will probably get your stack trashed. 2) The Carbon key modifiers is just that: key modifiers. That parameter will never contain the button state bit.
| typedef struct OpaqueEventRef* EventRef |
The core data structure for the Carbon event system. It is declared here instead of in CarbonEvents.h to avoid recursive include problems.
| typedef GetNextEventFilterUPP GNEFilterUPP |
CALL_NOT_IN_CARBON
| typedef BigEndianLong KeyMap[4] |
QuickTime 3.0 supports GetKeys() on unix and win32 But, on little endian machines you will have to be careful about bit numberings and/or use a KeyMapByteArray instead.
| typedef UInt8 KeyMapByteArray[16] |
TARGET_OS_MAC && TARGET_API_MAC_OS8
| anonymous enum |
| Enumerator | |
|---|---|
| activateEvt | Not sent in Carbon. See kEventClassVolume in CarbonEvents.h |
| anonymous enum |
| anonymous enum |
| anonymous enum |
convertClipboardFlag is not ever set under Carbon. This is because scrap conversion is
not tied to suspend/resume events any longer. Your application should instead use the
scrap promise mechanism and fulfill scrap requests only when your promise keeper proc
is called. If you need to know if the scrap has changed, you can cache the last
ScrapRef you received and compare it with the current ScrapRef
| anonymous enum |
| anonymous enum |
| anonymous enum |
useful Unicode code points
| anonymous enum |
Obsolete event types & masks
| Boolean Button | ( | void | ) |
| Boolean CheckEventQueueForUserCancel | ( | void | ) |
CheckEventQueueForUserCancel()
Summary: Determines if there is a cancel event in the event queue.
Discussion: This API supports two cancel events: Escape and Cmd-Period. Mouse or keyboard events in front of the cancel event in the event queue will be removed.
| void DisposeFKEYUPP | ( | FKEYUPP | userUPP | ) |
| void DisposeGetNextEventFilterUPP | ( | GetNextEventFilterUPP | userUPP | ) |
DisposeGetNextEventFilterUPP()
| UInt32 GetCaretTime | ( | void | ) |
Obtain insertion-point cursor blink interval.
GetCaretTime returns the amount of time, in 1/60-th second ( 16.66 ms) ticks, between blinks of the text-editing insertion point caret (normally a vertical bar).
a 32-bit long; the caret blink interval, as set by the user via the Control Panel DA.
Another way to access this information is by reading the global variable CaretTime (at 0x02F4). If you use TextEdit, the caret blinking is automatic (if you call TEIdle appropriately). Otherwise, you should check the elapsed ticks at each pass through your main event loop, and toggle the display on or off as each CaretTime -tick interval elapses.
| UInt32 GetCurrentKeyModifiers | ( | void | ) |
Summary: Returns the current state of the keyboard modifier keys.
Discussion: The format of the return value is the same as the modifiers field of the EventRecord.
| void GetGlobalMouse | ( | Point * | globalMouse | ) |
CALL_NOT_IN_CARBON OLDROUTINENAMES GetGlobalMouse, GetCurrentKeyModifiers, and CheckEventQueueForUserCancel are only available as part of the Carbon API. GetGlobalMouse()
Summary: Returns the position of the mouse in global coordinates.
Parameters:
globalMouse: On exit, contains the mouse position in global coordinates.
| void GetKeys | ( | KeyMap | theKeys | ) |
| void GetMouse | ( | Point * | mouseLoc | ) |
CALL_NOT_IN_CARBON GetMouse()
| if | ( | theEvent. | what = = keyDown | ) |
Find max delay between clicks of a double click.
GetDblTime returns an interval of time, in ticks. If two mouseDown events occur within this interval and are close together, the combined events should be considered a double click.
a 32-bit long; the suggested maximum interval, in 1/60th-second ticks, between a mouse up and the following mouseDown , that should constitute a double click.
Another way to get this information is to access the global variable DoubleTime directly. The interval is adjustable by the user via the Control Panel DA. If you compare the EventRecord .when and the EventRecord .where of any two mouseDown events and the second is less than DoubleTime ticks older than the first and the points of occurrence are within 5 pixels, it should be considered a double click. The following example illustrates how to detect a double click. Example #include < Events.h> #include <stdlib.h> void DoDoubleClick ( EventRecord theEvent); long lastWhen = 0; Point lastWhere = {0,0}; EventRecord theEvent; while (TRUE) { GetNextEvent ( everyEvent , &theEvent ); if ( theEvent.what == mouseDown ) { if ( ( (theEvent.when - lastWhen) < DoubleTime ) && ( abs(theEvent.where.h-lastWhere.h) < 5 ) && ( abs(theEvent.where.v-lastWhere.v) < 5 ) ) { DoDoubleClick( &theEvent ); // process the double click } lastWhen = theEvent.when; lastWhere = theEvent.where; / ... handle other mouseDown events ...
Set the system event mask
SetEventMask sets the low-level mask used by the system to determine which events it should post to the event queue. eventMask is a 16-bit binary mask describing which events to include or exclude. The normal value is 0xFFEF (which excludes only keyUp events). Use eventMask =everyEvent (defined in Events.h as 0xFFFF) to include all events. See Event Mask for named constants you can use in this value.
none
The preferred way to access the system event mask is by reading or storing the global variable SysEvtMask (at 0x0144). Indiscriminately changing this mask can cause problems. The only legitimate use is to allow enqueuing of keyUp events, i.e.: SetEventMask ( everyEvent ); // or SysEvtMask |= keyUpMask Applications making this call during initialization must save the event mask prior to calling SetEventMask and restore the event mask when quitting. If, under Finder, an application fails to restore the event mask before quitting and it was set to mask out mouseUp events, all mouseUp events would continue to be masked out. The user would then notice that the Finder no longer recognizes double clicks. There are other anomalies associated with MultiFinder ; to get a summary of these see the entry About MultiFinder .
Get address of event queue header
GetEvQHdr returns the address of the event queue header. This gives you direct access to the event queue, in case you want more complete control than provided by PostEvent and GetNextEvent .
a QHdrPtr; the address of the queue header of the system event queue.
This simply returns the value 0x014A - the address of the global variable EventQueue . See Enqueue and Dequeue for information on how to access elements of a queue.
CALL_NOT_IN_CARBON
Enqueue an event and get its address
PPostEvent works like PostEvent (it stores an entry into the event queue) except that it returns, via its third parameter, the physical address of the stored queue element. This provides access so you can modify the contents of that element. eventWhat specifies which type of event should be posted. It should be one of the event types listed in GetNextEvent . eventMsg specifies the value to be placed in the message field of the EventRecord . It should correspond in type to the meaning of eventWhat . qElPtris the address of an EvQElPtr . Upon return, it contains the address of a 22-byte evQEl structure. See Notes, below for an example of how to access that record.
an Error Code . The following are possible: noErr(0)worked without error evtNotEnb (1)eventWhat is currently disabled. See SetEventMask
The less-flexible PostEvent function lets you specify values for only two of the five EventRecord fields. By using PPostEvent , you can follow up by changing the where, when, and modifiers fields. For instance, you could use PPostEvent to enqueue a command-key shifted mouseDown event with selected coordinates as follows: EvQEl*myQElPtr; PPostEvent ( mouseDown , 0, &myQElPtr ); myQElPtr-> evtQModifiers = cmdKey; SetPt( &(myQElPtr->evtQWhere), 100,100); See EvQEl for the layout of event queue elements. It is also possible to build a queue element from scratch and use Enqueue to insert it into the event queue. See GetEvQHdr .
CALL_NOT_IN_CARBON
GetNextEvent()
WaitNextEvent()
can be NULL
EventAvail()
Place an EventRecord in the event queue
PostEvent stores an EventRecord into the event queue where it can be read via GetNextEvent , EventAvail or WaitNextEvent . eventWhat specifies which type of event should be posted. It should be one of the event types listed in Event Types . Typically, this will be the app3Evt event eventMsg specifies the value to be placed in the message field of the EventRecord . It should correspond in type to the meaning of eventWhat . For instance, in keyUp and keyDown events, the high word is 0, and the low word is a scan code and character code. For application-defined events, this can be any 32-bit value, such as a handle to a bunch of data.
a System Error Code . The following are possible: noErr(0)worked without error evtNotEnb (1)eventWhat is disabled. See SetEventMask
PostEvent creates the EventRecord using the current time, modifiers , and mouse position. If you need to control these values, you may have to modify the queue itself. See PPostEvent for a way to alter the EventRecord after it is enqueued and see GetEvQHdr for additional information. It is probably unwise to post window update and activate events ( updateEvt or activateEvt ) since these are actually generated by the Event Manager at the time of the GetNextEvent request, and are never actually stored in the queue. An example of usage might be to post a menu-changing event. For instance, define an app3Evt to be one that causes a window name to be added or removed from your application's Window menu. You could use PostEvent (app3Evt, windowID ) whenever the user opens or closes a document window. That way, you can handle all window-related menu manipulation as a function of your main event loop . Note: This is not necessarily a better way to do it, just an alternative.
For Carbon, use EventAvail, TickCount, GetGlobalMouse, GetKeys, or GetCurrentKeyModifiers instead of OSEventAvail, and use GetNextEvent or WaitNextEvent instead of GetOSEvent.
Low-level read event without dequeuing it
OSEventAvail is identical to GetOSEvent except that it does not remove the event from the event queue. This lets you check for the occurrence of a specific event (or any event) but leave it in the queue for later processing. eventMask is a 16-bit binary mask describing which events to include/exclude. Use eventMask =everyEvent (defined as -1) to include all events. See Event Mask for the layout. Some events (e.g., keyUp events) may never make it into the event queue. See SetEventMask . theEvent is the address of a 16-byte EventRecord . Upon return, it is filled with an event description. See GetNextEvent .
a Boolean value; it identifies whether a requested event was found. It will be one of: FALSEThis is a null event or one you did not request. Ignore it. TRUEThis event is intended for you. Examine and respond.
In a busy system, it is possible that an event read via this call will be discarded before it can be processed. The Event Manager usually keeps only 20 events, scrapping the oldest unread events to make room for new ones.
Low-level read event and remove event from event queue
GetOSEvent is identical to OSEventAvail except that removes the event from the event queue. Unlike GetNextEvent or WaitNextEvent , GetOSEvent doesn't call the Desk Manager to see if the system wants to intercept and respond to the event, nor does it perform GetNextEvent 's or WaitNextEvent 's processing of the alarm and Command-Shift-number combinations. eventMask is a 16-bit binary mask describing which events to include/exclude. Use eventMask =everyEvent (defined as -1) to include all events. See GetNextEvent for the layout. Some events (e.g., keyUp events) may never make it into the event queue. See SetEventMask . theEvent is the address of a 16-byte EventRecord . Upon return, it is filled with an event description. See GetNextEvent or WaitNextEvent .
a Boolean value; it identifies whether a requested event was found. It will be one of: FALSEThis is a null event or one you did not request. Ignore it. TRUEThis event is intended for you. Examine and respond.
The Event Manager usually keeps only 20 events, scrapping the oldest unread events to make room for new ones.
CALL_NOT_IN_CARBON
Discard all or selected events from event queue
FlushEvents discards all (or selected) events chronologically, until it hits a specified event type . It is often used at the beginning of a program to empty the event queue of spurious keystrokes or clicks left over from the Finder. eventMask specifies which event(s) should be flushed. It is a 16-bit binary mask where a 1 elects to flush an event and a 0 keeps the event. The most common usage is to use eventMask =everyEvent , defined in Events.h as 0xFFFF. See Event Mask for details. stopMask specifies which events (if any) should stop the flushing process. For instance, if you want to discard all events up to the next keystroke, use stopMask = keyDown . A value of 0 means to keep flushing to the end of the queue.
none
To purge all events from the queue, use: FlushEvents ( everyEvent , 0 ); Note: FlushEvents will not remove pending highLevelEvents.
SystemClick()
Give DAs a chance to perform periodic actions
Call SystemTask at least once each time through your event loop. It lets the Desk Manager process such periodic DA events as updating the display of a clock.
none
SystemTask should be called at least once every 17ms (1/60-th of a
second). Normal usage is to put it inside a part of the event loop that
always gets executed:
main()
{
InitGraf ();.... initialize other stuff ...while (TRUE) /* Loop forever; terminate via
| void InvokeFKEYUPP | ( | FKEYUPP | userUPP | ) |
| void InvokeGetNextEventFilterUPP | ( | EventRecord * | theEvent, |
| Boolean * | result, | ||
| GetNextEventFilterUPP | userUPP | ||
| ) |
| Boolean IsCmdChar | ( | const EventRecord * | event, |
| short | test | ||
| ) |
| void KeyScript | ( | short | code | ) |
| UInt32 KeyTranslate | ( | const void * | transData, |
| UInt16 | keycode, | ||
| UInt32 * | state | ||
| ) |
| UInt8 LMGetKbdLast | ( | void | ) |
| UInt8 LMGetKbdType | ( | void | ) |
| SInt16 LMGetKeyRepThresh | ( | void | ) |
| SInt16 LMGetKeyThresh | ( | void | ) |
LowMem accessor functions previously in LowMem.h LMGetKeyThresh()
| void LMSetKbdLast | ( | UInt8 | value | ) |
| void LMSetKbdType | ( | UInt8 | value | ) |
| void LMSetKeyRepThresh | ( | SInt16 | value | ) |
| void LMSetKeyThresh | ( | SInt16 | value | ) |
| FKEYUPP NewFKEYUPP | ( | FKEYProcPtr | userRoutine | ) |
| GetNextEventFilterUPP NewGetNextEventFilterUPP | ( | GetNextEventFilterProcPtr | userRoutine | ) |
| Boolean StillDown | ( | void | ) |
| Boolean SystemEvent | ( | const EventRecord * | theEvent | ) |
Used internally by Event Manager.
SystemEvent is called by the Event Manager as a way to watch for certain events and pass some of them directly to DAs, without bothering your application. This function should not be called by applications. theEvent is the address of a 16-byte EventRecord . It contains information received from a previous call to GetNextEvent .
A Boolean; it identifies whether the event should be handled by an application or a DA. It is one of: FALSE (0)This event should be passed to the application. It may be a system event the application should handle by calling SystemClick . TRUE (1)This event should be handled by the system (i.e., a DA). It will not be forwarded to the application.
SystemEvent is called internally by the GetNextEvent function. The idea is to avoid clogging up your event loop; let the system handle such events as keystrokes, mouse-ups, updates, and activate events occuring in a DA window. If you want to get a look at all events, you can store a 0 in the 1-byte global variable SEvtEnb (at 0x015c). This will cause GetNextEvent to forward all unmasked events to you. When a DA creates a window (including a modeless dialog) it must set the windowKind to its refnum, which is a negative number. When the application calls GetNextEvent , as explained above, the Event Manager calls SystemEvent . If it returns TRUE then your DA gets the event. Since your window is a modeless dialog you would call IsDialogEvent , which returns FALSE What is going on is that IsDialogEvent (like SystemEvent) checks the windowKind looking for a value of 2 (for dialogs). Since your dialog's windowKind is a negative number, the DA's refnum, IsDialogEvent does nothing. The solution is to change the windowKind of your window to 2 before calling IsDialogEvent . This allows the Dialog Manager to recognize and handle the event properly. Be sure to restore the windowKind to its former value before returning to SystemEvent . That way, when the application calls the Dialog Manager with the same event (it should pass all events to the Dialog Manager if it has any modeless dialogs), the Dialog Manager will ignore it.
| Boolean WaitMouseUp | ( | void | ) |
1.9.1