checking is mouse button is down

This is a discussion on checking is mouse button is down within the Windows Programming forums, part of the Platform Specific Boards category; How do i find out whether a mouse button is down or not at any time and not only the ...

  1. #1
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    checking is mouse button is down

    How do i find out whether a mouse button is down or not at any time and not only the moment it's clicked? I tried making a bool variable that get changed to true when the window procedure function is called with WM_LBUTTONDOWN and to false in the case of WM_LBUTTONUP but it wont get the WM_LBUTTONUP message when i bring up a modal dialog box.

    OS: Windows 7, XUbuntu 11.10, Arch Linux
    IDE: CodeBlocks
    Compiler: GCC

  2. #2
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    There's a few other commands you could experiment, ie. MK_LBUTTON and perhaps even WM_MOUSEMOVE might be of some help to you. Too lazy to find you a link, but check MSDN. Or, if you're even lazier than I am, maybe someone else will throw you the answer!

  3. #3
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    i read the msdn page for WM_LBUTTONDOWN and WM_MOUSEMOVE...
    so it's one of the possible wParam values whenever theres a mouse action message?

    is there an alternative solution to this that i can use outside the window procedure?

    OS: Windows 7, XUbuntu 11.10, Arch Linux
    IDE: CodeBlocks
    Compiler: GCC

  4. #4
    Deathray Engineer MacGyver's Avatar
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    I don't understand what your problem is. You want to read WM_LBUTTONUP and WM_LBUTTONDOWN messages in a dialog box? Why not subclass the dialog box callback procedure (by writing your own and replacing yours with the former)?

    General information on mouse input:

    http://msdn2.microsoft.com/en-us/library/ms674719.aspx

  5. #5
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    no, the problem is if a modal dialog box comes up while the mouse button is down, i don't get a WM_LBUTTONUP message

    OS: Windows 7, XUbuntu 11.10, Arch Linux
    IDE: CodeBlocks
    Compiler: GCC

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