How might I retrieve the icon of an open window?
Bonus Question (More Difficult): How might I retrieve the file path of a window?
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How might I retrieve the icon of an open window?
Bonus Question (More Difficult): How might I retrieve the file path of a window?
Here is the code from one of my modules that detects the exe of the active window. Under Windows 9x, GetExeFromHandle returns the full path, under Windows 2000, it returns just the exe name. That is my problem with the code; if you have found any other code examples, or discover how to extract the icon, please let me know. I was using the code to get the icon actually, but it won't work in Win2k b/c to get the icon u need the full path. Let me know if you find any other solutions.
--Mike Wellems
[email protected]
'Get active window caption
Public Declare Function GetForegroundWindow Lib "user32" () As Long
Public Declare Function GetWindowText Lib "user32" Alias "GetWindowTextA" (ByVal hwnd As Long, ByVal lpString As String, ByVal cch As Long) As Long
'Get active window exe
Public Const TH32CS_SNAPPROCESS As Long = 2&
Public Const MAX_PATH As Long = 260
Public Type PROCESSENTRY32
dwSize As Long
cntUsage As Long
th32ProcessID As Long
th32DefaultHeapID As Long
th32ModuleID As Long
cntThreads As Long
th32ParentProcessID As Long
pcPriClassBase As Long
dwflags As Long
szexeFile As String * MAX_PATH
End Type
Public Declare Function GetWindowThreadProcessId Lib "user32" _
(ByVal hwnd As Long, lpdwProcessId As Long) As Long
Public Declare Function CreateToolhelpSnapshot Lib "Kernel32" _
Alias "CreateToolhelp32Snapshot" (ByVal lFlgas As Long, ByVal _
lProcessID As Long) As Long
Public Declare Function ProcessFirst Lib "Kernel32" Alias _
"Process32First" (ByVal hSnapshot As Long, uProcess As _
PROCESSENTRY32) As Long
Public Declare Function ProcessNext Lib "Kernel32" Alias _
"Process32Next" (ByVal hSnapshot As Long, uProcess As PROCESSENTRY32) As Long
Public Declare Sub CloseHandle Lib "Kernel32" (ByVal hPass As Long)
'Get active window caption
Public Function GetWindowCaption(ByVal hwnd As Long, ByVal lParam As Long) As String
Dim lWin As Long
Dim strWinText As String
strWinText = Space(255)
lWin = GetWindowText(hwnd, strWinText, Len(strWinText))
If lWin Then strWinText = Left(strWinText, lWin)
GetWindowCaption = strWinText
End Function
'Get active window exe
Public Function GetExeFromHandle(hwnd As Long) As String
Dim threadID As Long, processID As Long, hSnapshot As Long
Dim uProcess As PROCESSENTRY32, rProcessFound As Long
Dim i As Integer, szExename As String
' Get ID for window thread
threadID = GetWindowThreadProcessId(hwnd, processID)
' Check if valid
If threadID = 0 Or processID = 0 Then Exit Function
' Create snapshot of current processes
hSnapshot = CreateToolhelpSnapshot(TH32CS_SNAPPROCESS, 0&)
' Check if snapshot is valid
If hSnapshot = -1 Then Exit Function
'Initialize uProcess with correct size
uProcess.dwSize = Len(uProcess)
'Start looping through processes
rProcessFound = ProcessFirst(hSnapshot, uProcess)
Do While rProcessFound
If uProcess.th32ProcessID = processID Then
'Found it, now get name of exefile
i = InStr(1, uProcess.szexeFile, Chr(0))
If i > 0 Then szExename = Left$(uProcess.szexeFile, i - 1)
Exit Do
Else
'Wrong ID, so continue looping
rProcessFound = ProcessNext(hSnapshot, uProcess)
End If
Loop
Call CloseHandle(hSnapshot)
GetExeFromHandle = szExename
End Function