Associate File Name and Icon
For those of you who want to add a touch of professionalism to your program, now you can create a file type in the Windows Registry database which will associate all files ending with your program's file extension ( yourfile.xxx) to your program. You also specify an icon for your file type and a description. This example also shows you how to use Command$ to open these files in your program when once the file is clicked or opened, and a quick tip on creating files in the Windows Recent file folder (Start > Documents).
AI
AI Summary: This codebase represents a historical implementation of the logic described in the metadata. Our preservation engine analyzes the structure to provide context for modern developers.
Source Code
'In a module:
'-----------------------------------------
Public Sub savekey(Hkey As Long, strPath As String)
Dim keyhand&
r = RegCreateKey(Hkey, strPath, keyhand&)
r = RegCloseKey(keyhand&)
End Sub
Public Function getstring(Hkey As Long, strPath As String, strValue As String)
Dim keyhand As Long
Dim datatype As Long
Dim lResult As Long
Dim strBuf As String
Dim lDataBufSize As Long
Dim intZeroPos As Integer
r = RegOpenKey(Hkey, strPath, keyhand)
lResult = RegQueryValueEx(keyhand, strValue, 0&, lValueType, ByVal 0&, lDataBufSize)
If lValueType = REG_SZ Then
strBuf = String(lDataBufSize, " ")
lResult = RegQueryValueEx(keyhand, strValue, 0&, 0&, ByVal strBuf, lDataBufSize)
If lResult = ERROR_SUCCESS Then
intZeroPos = InStr(strBuf, Chr$(0))
If intZeroPos > 0 Then
getstring = Left$(strBuf, intZeroPos - 1)
Else
getstring = strBuf
End If
End If
End If
End Function
Public Sub savestring(Hkey As Long, strPath As String, strValue As String, strdata As String)
Dim keyhand As Long
Dim r As Long
r = RegCreateKey(Hkey, strPath, keyhand)
r = RegSetValueEx(keyhand, strValue, 0, REG_SZ, ByVal strdata, Len(strdata))
r = RegCloseKey(keyhand)
End Sub
Function getdword(ByVal Hkey As Long, ByVal strPath As String, ByVal strValueName As String) As Long
Dim lResult As Long
Dim lValueType As Long
Dim lBuf As Long
Dim lDataBufSize As Long
Dim r As Long
Dim keyhand As Long
r = RegOpenKey(Hkey, strPath, keyhand)
lDataBufSize = 4
lResult = RegQueryValueEx(keyhand, strValueName, 0&, lValueType, lBuf, lDataBufSize)
If lResult = ERROR_SUCCESS Then
If lValueType = REG_DWORD Then
getdword = lBuf
End If
End If
r = RegCloseKey(keyhand)
End Function
Function SaveDword(ByVal Hkey As Long, ByVal strPath As String, ByVal strValueName As String, ByVal lData As Long)
Dim lResult As Long
Dim keyhand As Long
Dim r As Long
r = RegCreateKey(Hkey, strPath, keyhand)
lResult = RegSetValueEx(keyhand, strValueName, 0&, REG_DWORD, lData, 4)
r = RegCloseKey(keyhand)
End Function
Public Function DeleteKey(ByVal Hkey As Long, ByVal strKey As String)
Dim r As Long
r = RegDeleteKey(Hkey, strKey)
End Function
Public Function DeleteValue(ByVal Hkey As Long, ByVal strPath As String, ByVal strValue As String)
Dim keyhand As Long
r = RegOpenKey(Hkey, strPath, keyhand)
r = RegDeleteValue(keyhand, strValue)
r = RegCloseKey(keyhand)
End Function
'-------------------------------------------
'On a Form:
'----------------------------------------------
Private Declare Function fCreateShellLink Lib "STKIT432.DLL" (ByVal _
lpstrFolderName As String, ByVal lpstrLinkName As String, ByVal _
lpstrLinkPath As String, ByVal lpstrLinkArgs As String) As Long
Private Sub Form_Load()
Dim strString As String
Dim lngDword As Long
If Command$ <> "%1" Then
Msgbox (Command$ & " is the file you need to open!"), vbInformation
'Add to Recent file folder
lReturn = fCreateShellLink("..\..\Recent", _
Command$, Command$, "")
End If
'create an entry in the class key
Call savestring(HKEY_CLASSES_ROOT, "\.xyz", "", "xyzfile")
'content type
Call savestring(HKEY_CLASSES_ROOT, "\.xyz", "Content Type", "text/plain")
'name
Call savestring(HKEY_CLASSES_ROOT, "\xyzfile", "", "This is where you type the description for these files")
'edit flags
Call SaveDword(HKEY_CLASSES_ROOT, "\xyzfile", "EditFlags", "0000")
'file's icon (can be an icon file, or an icon located within a dll file)
Call savestring(HKEY_CLASSES_ROOT, "\xyzfile\DefaultIcon", "", App.Path & "\ICON.ico")
'Shell
Call savestring(HKEY_CLASSES_ROOT, "\xyzfile\Shell", "", "")
'Shell Open
Call savestring(HKEY_CLASSES_ROOT, "\xyzfile\Shell\Open", "", "")
'Shell open command
Call savestring(HKEY_CLASSES_ROOT, "\xyzfile\Shell\Open\command", "", App.Path & "\Project1.exe %1")
End Sub
'----------------------------------------------
Original Comments (3)
Recovered from Wayback Machine