Hola a todos!!
Estuve probando muchas formas para mover un formulario sin barra de titulo y me encontré el siguiente código, y de todos los que había usado este trabaja perfecto!!!
Les dejo el link donde lo encontré y el código por si a alguien le sirve.
PUBLIC oform1
oForm1 = NEWOBJECT("form1")
oForm1.Show()
RETURN
DEFINE CLASS form1 AS form
Autocenter = .T.
Height = 250
Width = 375
TitleBar = 0
Name = "Form1"
ADD OBJECT command1 AS commandbutton WITH ;
Top = 192, Left = 132, Height = 27, Width = 84, ;
Caption = "Exit", Name = "Command1"
ADD OBJECT command2 AS commandbutton WITH ;
Top = 84, Left = 48, Height = 27, Width = 84, ;
Caption = "Command2", SpecialEffect = 2, Name = "Command2"
ADD OBJECT command3 AS commandbutton WITH ;
Top = 84, Left = 252, Height = 27, Width = 84, ;
Caption = "Command3", SpecialEffect = 2, Name = "Command3"
PROCEDURE Load
DECLARE Long ReleaseCapture IN WIN32API
DECLARE Long SendMessage IN WIN32API ;
Long HWND, Long wMsg, Long wParam, Long Lparam
ENDPROC
PROCEDURE MouseDown
LPARAMETERS nButton, nShift, nXCoord, nYCoord
#DEFINE WM_SYSCOMMAND 0x112
#DEFINE WM_LBUTTONUP 0x202
#DEFINE MOUSE_MOVE 0xf012
IF nButton = 1 && LMB
= ReleaseCapture()
* Complete left click by sending 'left button up' message
= SendMessage(Thisform.HWnd, WM_LBUTTONUP, 0x0, 0x0)
* Initiate Window Move
= SendMessage(Thisform.HWnd, WM_SYSCOMMAND, MOUSE_MOVE, 0x0)
ENDIF
ENDPROC
PROCEDURE command1.Click
Thisform.Release()
ENDPROC
ENDDEFINE
saludos
Antonio Meza