please dont rip this site Prev Next

GetQueueStatus info  Overview  Group

The GetQueueStatus function returns flags that indicate the type of messages found in the calling threadís message queue.

DWORD GetQueueStatus(

    UINT flags 

// queue-status flags

   );

Parameters

flags
Specifies queue-status flags giving the types of messages to check for. This parameter can be a combination of the following values:

Value

Meaning

QS_ALLEVENTS

An input, WM_TIMER, WM_PAINT, WM_HOTKEY, or posted message is in the queue.

QS_ALLINPUT

Any message is in the queue.

QS_ALLPOSTMESSAGE

A posted message (other than those listed here) is in the queue.

QS_HOTKEY

A WM_HOTKEY message is in the queue.

QS_INPUT

An input message is in the queue.

QS_KEY

A WM_KEYUP, WM_KEYDOWN, WM_SYSKEYUP, or WM_SYSKEYDOWN message is in the queue.

QS_MOUSE

A WM_MOUSEMOVE message or mouse-button message (WM_LBUTTONUP, WM_RBUTTONDOWN, and so on).

QS_MOUSEBUTTON

A mouse-button message (WM_LBUTTONUP, WM_RBUTTONDOWN, and so on).

QS_MOUSEMOVE

A WM_MOUSEMOVE message is in the queue.

QS_PAINT

A WM_PAINT message is in the queue.

QS_POSTMESSAGE

A posted message (other than those listed here) is in the queue.

QS_SENDMESSAGE

A message sent by another thread or application is in the queue.

QS_TIMER

A WM_TIMER message is in the queue.

Return Values

The high-order word of the return value indicates the types of messages currently in the queue. The low-order word indicates the types of messages that have been added to the queue and that are still in the queue since the last call to the GetQueueStatus, GetMessage, or PeekMessage function.

Remarks

The presence of a QS_ flag in the return value does not guarantee that a subsequent call to the GetMessage or PeekMessage function will return a message. GetMessage and PeekMessage perform some internal filtering that may cause the message to be processed internally. For this reason, the return value from GetQueueStatus should be considered only a hint as to whether GetMessage or PeekMessage should be called.

The QS_ALLPOSTMESSAGE and QS_POSTMESSAGE flags differ in when they are cleared. QS_ALLPOSTMESSAGE is cleared when you call GetMessage or PeekMessage without filtering messages (wMsgFilterMin and wMsgFilterMax are 0). QS_POSTMESSAGE is cleared when you call GetMessage or PeekMessage, whether or not you are filtering messages.

See Also

GetInputState, GetMessage, PeekMessage 

See also:


file: /Techref/os/win/api/win32/func/src/f38_1.htm, 5KB, , updated: 2000/4/7 12:19, local time: 2022/5/23 17:45,
TOP NEW HELP FIND: 
3.238.72.122:LOG IN

 ©2022 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?
Please DO link to this page! Digg it! / MAKE!

<A HREF="http://www.piclist.com/techref/os/win/api/win32/func/src/f38_1.htm"> GetQueueStatus</A>

After you find an appropriate page, you are invited to your to this massmind site! (posts will be visible only to you before review) Just type a nice message (short messages are blocked as spam) in the box and press the Post button. (HTML welcomed, but not the <A tag: Instead, use the link box to link to another page. A tutorial is available Members can login to post directly, become page editors, and be credited for their posts.


Link? Put it here: 
if you want a response, please enter your email address: 
Attn spammers: All posts are reviewed before being made visible to anyone other than the poster.
Did you find what you needed?

  PICList 2022 contributors:
o List host: MIT, Site host massmind.org, Top posters @20220523
* Page Editors: James Newton, David Cary, and YOU!
* Roman Black of Black Robotics donates from sales of Linistep stepper controller kits.
* Ashley Roll of Digital Nemesis donates from sales of RCL-1 RS232 to TTL converters.
* Monthly Subscribers: Gregg Rew. on-going support is MOST appreciated!
* Contributors: Richard Seriani, Sr.
 

Welcome to www.piclist.com!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  .