Print Page - TrackMouseEvent

Title: TrackMouseEvent
Post by: Mr Earl on March 17, 2006, 12:40:45 PM

Why doesn't this code work?

LOCAL track:TRACKMOUSEEVENT

.elseif iMsg==WM_MOUSEHOVER
	PrintText"HOVER"

.elseif iMsg==WM_MOUSELEAVE
	PrintText"LEAVE"

.elseif iMsg==WM_MOUSEMOVE
	mov track.cbSize,sizeof track
	mov track.dwFlags,TME_LEAVE or TME_HOVER
	m2m track.hwndTrack,hFind
	mov track.dwHoverTime,400
	invoke TrackMouseEvent,addr track

hFind is a dialog PUSHBUTTON. I can get a ToolTip to work for it, but I never get a WM_MOUSEHOVER.
DEBUG is turned on

Title: Re: TrackMouseEvent
Post by: donkey on March 18, 2006, 05:03:15 AM

Make sure that you are not placing the test for the messages in your main window or dialog proc, they have to be in the proc for the control itself. If it is a button then subclass it and use the subclassing procedure...

To sublcass the button (in your WM_INITDIALOG handler or once it is created)

Code Select

invoke SetWindowLong,hFind,GWL_WNDPROC,offset BtnSubClass
mov pButtonProc,eax

Button subclass procedure

Code Select

BtnSubClass PROC hwnd:DWORD, iMsg:DWORD, wParam:DWORD, lParam:DWORD
	LOCAL track:TRACKMOUSEEVENT

	.if iMsg==WM_MOUSEHOVER
		PrintText"HOVER"

	.elseif iMsg==WM_MOUSELEAVE
		PrintText"LEAVE"

	.elseif iMsg==WM_MOUSEMOVE
		mov track.cbSize,sizeof TRACKMOUSEEVENT
		mov track.dwFlags,TME_LEAVE or TME_HOVER
		m2m track.hwndTrack,hwnd
		mov track.dwHoverTime,400
		invoke TrackMouseEvent,addr track

	.endif
	invoke CallWindowProc,pButtonProc,hwnd,iMsg,wParam,lParam
	RET
ENDF

Title: Re: TrackMouseEvent
Post by: Mr Earl on March 18, 2006, 09:41:44 AM

Thank you. That solved the problem.

The MASM Forum Archive 2004 to 2012

General Forums => The Campus => Topic started by: Mr Earl on March 17, 2006, 12:40:45 PM