Return process name from window handle...
Posted: Sun Nov 30, 2003 8:00 pm
Just a stripped down version of something I posted in another thread (the basic functionality was buried in another program)...
For this demo, just point at various other windows on the screen, making sure you can see this window's title bar!
For this demo, just point at various other windows on the screen, making sure you can see this window's title bar!
Code: Select all
; -----------------------------------------------------------------------------
; Public domain -- Hi-Toro 2003
; -----------------------------------------------------------------------------
; Return a window's process name from its handle...
; -----------------------------------------------------------------------------
; IMPORTANT! You must paste the following section of code (from here to the
; demo section) at the top of your code, AND paste the part at the bottom
; (the 'GetProcessList' sub-routine) at the bottom of your code. The reason the
; sub-routine is required (rather than a procedure) is that the Win32 function
; 'Process32Next' seems to fail on Windows 9x when called from inside a procedure...
; Note that you should always call 'GetProcessList' before trying to retrieve a window's process name...
; -----------------------------------------------------------------------------
; Paste at top of your code...
; -----------------------------------------------------------------------------
#TH32CS_SNAPHEAPLIST = $1
#TH32CS_SNAPPROCESS = $2
#TH32CS_SNAPTHREAD = $4
#TH32CS_SNAPMODULE = $8
#TH32CS_SNAPALL = #TH32CS_SNAPHEAPLIST | #TH32CS_SNAPPROCESS | #TH32CS_SNAPTHREAD | #TH32CS_SNAPMODULE
#TH32CS_INHERIT = $80000000
#INVALID_HANDLE_VALUE = -1
#MAX_PATH = 260
#PROCESS32LIB = 9999
Structure PROCESSENTRY32
dwSize.l
cntUsage.l
th32ProcessID.l
*th32DefaultHeapID.l
th32ModuleID.l
cntThreads.l
th32ParentProcessID.l
pcPriClassBase.l
dwFlags.l
szExeFile.b [#MAX_PATH]
EndStructure
; List used to store processes on 'Gosub GetProcessList'...
NewList Process32.PROCESSENTRY32 ()
; Returns process name from window handle...
; IMPORTANT! You should 'Gosub GetProcessList' before calling this!
Procedure.s FindWindowProcessName (window)
ResetList (Process32 ())
While NextElement (Process32 ())
GetWindowThreadProcessId_ (window, @pid)
If pid = Process32 ()\th32ProcessID
exe$ = GetFilePart (PeekS (@Process32 ()\szExeFile))
LastElement (Process32 ())
EndIf
Wend
ProcedureReturn exe$
EndProcedure
; Returns Process ID from window handle...
Procedure.l FindWindowProcessID (window)
GetWindowThreadProcessId_ (window, @pid)
ProcedureReturn pid
EndProcedure
; -----------------------------------------------------------------------------
; D E M O...
; -----------------------------------------------------------------------------
window = OpenWindow (0, 0, 0, 320, 200, #PB_Window_SystemMenu | #PB_Window_ScreenCentered, "Test window")
; Update every 100 ms...
SetTimer_ (WindowID (), 0, 100, 0)
Repeat
Select WaitWindowEvent ()
Case #PB_Event_CloseWindow
End
Case #WM_TIMER
; Get process list...
Gosub GetProcessList
; Get window under mouse position...
GetCursorPos_ (@p.POINT)
over = WindowFromPoint_ (p\x, p\y)
; Find its name and set this window's title to it...
proc$ = FindWindowProcessName (over)
SetWindowText_ (window, proc$)
EndSelect
ForEver
; -----------------------------------------------------------------------------
; Paste at bottom of your code...
; -----------------------------------------------------------------------------
End ; Leave this here!
GetProcessList:
ClearList (Process32 ())
; Add processes to Process32 () list...
If OpenLibrary (#PROCESS32LIB, "kernel32.dll")
snap = CallFunction (#PROCESS32LIB, "CreateToolhelp32Snapshot", #TH32CS_SNAPPROCESS, 0)
If snap
DefType.PROCESSENTRY32 Proc32
Proc32\dwSize = SizeOf (PROCESSENTRY32)
If CallFunction (#PROCESS32LIB, "Process32First", snap, @Proc32)
AddElement (Process32 ())
CopyMemory (@Proc32, @Process32 (), SizeOf (PROCESSENTRY32))
While CallFunction (#PROCESS32LIB, "Process32Next", snap, @Proc32)
AddElement (Process32 ())
CopyMemory (@Proc32, @Process32 (), SizeOf (PROCESSENTRY32))
Wend
EndIf
CloseHandle_ (snap)
EndIf
CloseLibrary (#PROCESS32LIB)
EndIf
Return