Instant About Boxes

Instant About Boxes

The ShellAbout API call provides a quick and easy way to show an aboutbox (using the standard Win95 format) without having to include an additionalform in your project. The call uses four parameters: the hWnd of your maindialog, a string containing the name of your application, another stringcontaining an optional additional line of text, and a long pointer to thehandle of an icon. Start by placing this code in a BAS module:

 Global Const GWW_HINSTANCE = (-6)Declare Function ShellAbout Lib "shell32.dll" _	Alias "ShellAboutA" (ByVal hwnd As Long, _	ByVal szApp As String, ByVal szOtherStuff _	As String, ByVal hIcon As Long) As LongDeclare Function ExtractIcon Lib "shell32.dll" _ 	Alias "ExtractIconA" (ByVal hInst As Long, _	ByVal lpszExeFileName As String, ByVal _	nIconIndex As Long) As LongDeclare Function GetWindowLong Lib "user32" _	Alias "GetWindowLongA" (ByVal hwnd As Long, _	ByVal nIndex As Long) As Long

Add this routine to a button or menu to call your about box:

 	Dim lRet As Long	Dim lNull As Long	Dim lIcon As Long	Dim lInst As Long	lInst = GetWindowLong_		(Form1.hwnd, GWW_HINSTANCE)	lIcon = ExtractIcon(lInst, "MYEXE.EXE", 0&) 	lRet = ShellAbout(Form1.hwnd, _		"My App Name", "Copyright © 1995 _		My Company Name" & Chr(13) & _		Chr$(10) & "Serial # xxxxxxxxx-xxx", lIcon)

lRet will return true if the dialog was able to display and false ifthere was a problem. All of the required functions operate in both Windows95 and Windows NT.

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