Improve company productivity with a Business Account.Sign Up

x
?
Solved

how to get the state of mouse buttons

Posted on 1998-06-12
2
Medium Priority
?
340 Views
Last Modified: 2013-11-20
I need to know the state of the left mouse button when handling a WM_NCMOUSEMOVE (WM_NCMOUSEUP is not sent after a WM_NCMOUSEDOWN, SetCapture() changes nothing)

how to get the state (through API or not...)
0
Comment
Question by:amby
  • 2
2 Comments
 
LVL 23

Accepted Solution

by:
chensu earned 240 total points
ID: 1317908
if (::GetKeyState(VK_LBUTTON) & 0x8000)
    // down
else
    // up

0
 
LVL 23

Expert Comment

by:chensu
ID: 1317909
You may also use GetAsyncKeyState. See the documentation for the difference.

Please note: (I am not sure if it is also true for GetKeyState. You may test it.)

The GetAsyncKeyState function works with mouse buttons. However, it checks on the state of the physical mouse buttons, not on the logical mouse buttons that the physical buttons are mapped to. For example, the call GetAsyncKeyState(VK_LBUTTON) always returns the state of the left physical mouse button, regardless of whether it is mapped to the left or right logical mouse button. You can determine the system's current mapping of physical mouse buttons to logical mouse buttons by calling

GetSystemMetrics(SM_SWAPBUTTON)
 
which returns TRUE if the mouse buttons have been swapped.


0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Here is how to use MFC's automatic Radio Button handling in your dialog boxes and forms.  Beginner programmers usually start with a OnClick handler for each radio button and that's just not the right way to go.  MFC has a very cool system for handli…
Exception Handling is in the core of any application that is able to dignify its name. In this article, I'll guide you through the process of writing a DRY (Don't Repeat Yourself) Exception Handling mechanism, using Aspect Oriented Programming.
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
Watch the working video to know how to import Outlook PST/OST files to Amazon WorkMail. Kernel released this tool which is very easy to use and migrate single or multiple PST and OST files to Amazon WorkMail. To know more about Kernel Import PST to …

579 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question