Hello foxer!

Today is my first time posting. I 'd like to share my first tips about changing the VFP tooltips appearance (margin, font, color, etc..). This idea is based on a UT thread by Malcolm Greene who is also greatly supported and encouraging me for months. Malcolm is also a team member for my blogger. So, my special thanks to Malcolm :)

Anyway, here is the tips:

How to change VFP tooltips appearance using BINDEVENT()

VFP Tooltips is just another window that was created and the classname was registered by VFP. All you need is to find the window with that classname. To find VFP tooltips window you need to enumerate the window (start from the desktop), and look for the window that has WS_EX_TOOLWINDOW for the extended style.

hWnd = 0
lFound = .F.
cClassName = space( 32 )
nLen = GetClassName( _VFP.hWnd, @cClassName, 32 )
If WIN_2K_XP
cClassName = left( cClassName, nLen ) + '3'
else
cClassName = left( cClassName, nLen ) + '2'
endif

Do while !( lFound )
hWnd = FindWindowEx( 0, hWnd, cClassName, Null )
If (hWnd != 0)
nExStyle = GetWindowLong( hWnd, GWL_EXSTYLE )
lFound = (BitAnd( nExStyle, WS_EX_TOOLWINDOW ) != 0)
else
lFound = .T.
endif
enddo

Then bind WM_SHOWWINDOW, WM_ERASEBKGND and WM_WINDOWPOSCHANGED into that window.

If (hWnd != 0)
** hWnd = Handle to Tooltips window
** This = Object handler for Window Messages
** WndProc = name of the Procedure/Method for the callback
This.pOrgProc = GetWindowLong( hWnd, GWL_WNDPROC )
BindEvent( hWnd, WM_SHOWWINDOW, This, 'WndProc' )
BindEvent( hWnd, WM_ERASEBKGND, This, 'WndProc' )
BindEvent( hWnd, WM_WINDOWPOSCHANGED, This, 'WndProc' )
endif


** WndProc method
LParameters hWnd, nMsg, wParam, lParam

Do case
Case (nMsg == WM_ERASEBKGND)
This.lEraseBackground = .T.

Case (nMsg == WM_SHOWWINDOW)
** Process WM_SHOWWINDOW if the window is being *shown*
** Otherwise, let default VFP process this message
If (wParam == SW_SHOWNORMAL)
This.On_ShowWindow( hWnd )
Return 0
endif

Case (nMsg == WM_WINDOWPOSCHANGED)
** Only process WM_WINDOWPOSCHANGED after WM_ERASEBKGND
If This.lEraseBackGround
This.On_WindowPosChanged( hWnd )
This.lEraseBackGround = .F.
Return 0
endif
EndCase

Return CallWindowProc( This.pOrgProc, hWnd, nMsg, wParam, lParam )


** On_ShowWindow method
LParameters hWnd

Local sRect
Local nLeft, nTop, nRight, nBottom, nWidth, nHeight

sRect = space( RECT_Size )
GetWindowRect( hWnd, @sRect )
With This
nLeft = .Buff2Num( sRect, 1, .T. )
nTop = .Buff2Num( sRect, 5, .T. )
nRight = .Buff2Num( sRect, 9, .T. )
nBottom = .Buff2Num( sRect, 13, .T. )
nWidth = (nRight - nLeft) + .nAddWidth && default .nAddWidth = 14
nHeight = (nBottom - nTop) + .nAddHeight && default .nAddHeight = 12
EndWith

SetWindowPos( hWnd, HWND_TOP, nLeft, nTop+SysMetric(4), ; nWidth, nHeight, SWP_NOZORDER + SWP_NOACTIVATE )


** On_WindowPosChanged method
LParameters hWnd

Local hDC, sRect, hOldBrush
Local nLeft, nTop, nRight, nBottom
Local cText, nLen

cText = replicate( c0, MAX_PATH )
nLen = GetWindowText( hWnd, @cText, MAX_PATH )
If (nLen > 0)
cText = left( cText, nLen )
sRect = space( RECT_Size )
GetClientRect( hWnd, @sRect )
hDC = GetDC( hWnd )
hOldBrush = SelectObject( hDC, GetSysColorBrush( COLOR_INFOBK ))

With This
nLeft = .Buff2Num( sRect, 1, .T. ) - 1
nTop = .Buff2Num( sRect, 5, .T. ) - 1
nRight = .Buff2Num( sRect, 9, .T. ) + 1
nBottom = .Buff2Num( sRect, 13, .T. ) + 1

Rectangle( hDC, nLeft, nTop, nRight, nBottom )
nLeft = nLeft + (.nAddWidth / 2) + 2
nTop = nTop + (.nAddHeight / 2) + 2
EndWith

SetRect( @sRect, nLeft, nTop, nRight, nBottom )
DrawText( hDC, cText, nLen, sRect, DT_LEFT + DT_NOCLIP )
SelectObject( hDC, hOldBrush )
ReleaseDC( hWnd, hDC )
endif

Download VFP Tooltips source code

Enjoy the tips. And we (me and Malcolm) hope to put more contents here soon.
Long live VFP!