WIN32 API to find Mouse Button State

[poda]

Dear Friends, How to know whether the mouse button is Down even if it moving.The WM_LBUTTONDOWN message is fired only for the first time left button is pressed. But how to know whether it is pressed all the time though it may be moving.

[Mark Salsbery]

Maybe GetAsyncKeyState()[^]. Mark

Mark Salsbery Microsoft MVP - Visual C++ :java:

[Stephen Hewitt]

Calling GetKeyState may be a better choice as it reflects state of the button when the current message was generated.

Steve

[Nibu babu thomas]

poda wrote:

How to know whether the mouse button is Down even if it moving.

Add event handler for WM_MOUSEMOVE. If the WPARAM for this event has MK_LBUTTON set then left mouse button is down, or if it has MK_MBUTTON, MK_RBUTTON then the corresponding mouse button is down! If you are using MFC then use void OnMouseMove( UINT nFlags, CPoint point ). nFlags will contain appropriate flags to indicate whether left, middle, right buttons or whether shift key is down. Use bitwise and to find out. E.g.

if(( nFlag & MK_LBUTTON ) == MK_LBUTTON )
AfxTrace( "You are dragging the mouse\n" );

Nibu thomas Microsoft MVP for VC++ Code must be written to be read, not by the compiler, but by another human being. Programming Blog: http://nibuthomas.wordpress.com

modified on Friday, April 11, 2008 2:58 AM

[Mark Salsbery]

I'm sure that's what I meant :) Thanks Steve! Mark

Mark Salsbery Microsoft MVP - Visual C++ :java:

[poda]

Thanks for your replies friends. I used like SHORT LButtonDown; LButtonDown=GetKeyState(VK_LBUTTON); if(LButtonDown & 0x8000) { ...code here } It works.Thanks a lot.

[Hamid Taebi]

Im not sure see here[^] and here[^] does any help?