Buen@s dias, tardes, noches.

Hace poco me inicie en el mundo de la programacion [ asi me tome la libertad de llamarle    ] pero tengo una duda sobre unas declaraciones "APIS" quisiera saber para que sirve cada una y como pasarlas de visual basic 6.0 a visual basic 2008 ya que es donde decidi iniciarme.

aqui tales APIS:

ValidateRect
Private Declare Function ValidateRect Lib "user32" Alias "ValidateRect" (ByVal hwnd As Long, lpRect As RECT) As Long
 
VirtualAlloc
Private Declare Function VirtualAlloc Lib "kernel32" Alias "VirtualAlloc" (lpAddress As Any, ByVal dwSize As Long, ByVal flAllocationType As Long, ByVal flProtect As Long) As Long
 
VirtualFree
Private Declare Function VirtualFree Lib "kernel32" Alias "VirtualFree" (lpAddress As Any, ByVal dwSize As Long, ByVal dwFreeType As Long) As Long
 
VirtualLock
Private Declare Function VirtualLock Lib "kernel32" Alias "VirtualLock" (lpAddress As Any, ByVal dwSize As Long) As Long
 
VirtualProtect
Private Declare Function VirtualProtect Lib "kernel32" Alias "VirtualProtect" (lpAddress As Any, ByVal dwSize As Long, ByVal flNewProtect As Long, lpflOldProtect As Long) As Long
 
VirtualProtectEx
Private Declare Function VirtualProtectEx Lib "kernel32" Alias "VirtualProtectEx" (ByVal hProcess As Long, lpAddress As Any, ByVal dwSize As Long, ByVal flNewProtect As Long, lpflOldProtect As Long) As Long
 
VirtualQuery
Private Declare Function VirtualQuery Lib "kernel32" Alias "VirtualQuery" (lpAddress As Any, lpBuffer As MEMORY_BASIC_INFORMATION, ByVal dwLength As Long) As Long
 
VirtualQueryEx
Private Declare Function VirtualQueryEx Lib "kernel32" Alias "VirtualQueryEx" (ByVal hProcess As Long, lpAddress As Any, lpBuffer As MEMORY_BASIC_INFORMATION, ByVal dwLength As Long) As Long
 
VirtualUnlock
Private Declare Function VirtualUnlock Lib "kernel32" Alias "VirtualUnlock" (lpAddress As Any, ByVal dwSize As Long) As Long
 
WriteProcessMemory
Private Declare Function WriteProcessMemory Lib "kernel32" Alias "WriteProcessMemory" (ByVal hProcess As Long, lpBaseAddress As Any, lpBuffer As Any, ByVal nSize As Long, lpNumberOfBytesWritten As Long) As Long
 
FlashWindow
Private Declare Function FlashWindow Lib "user32" Alias "FlashWindow" (ByVal hwnd As Long, ByVal bInvert As Long) As Long
 
FindWindow
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
 
GetAsyncKeyState
Private Declare Function GetAsyncKeyState Lib "user32" Alias "GetAsyncKeyState" (ByVal vKey As Long) As Integer
 
ShellExecute
Private Declare Function ShellExecute Lib "shell32.dll" Alias "ShellExecuteA" (ByVal hwnd As Long, ByVal lpOperation As String, ByVal lpFile As String, ByVal lpParameters As String, ByVal lpDirectory As String, ByVal nShowCmd As Long) As Long
 
ShellAbout
Private 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 Long
 
UnhookWindowsHook
Private Declare Function UnhookWindowsHook Lib "user32" Alias "UnhookWindowsHook" (ByVal nCode As Long, ByVal pfnFilterProc As Long) As Long
 

son solo esas las APIS que me llamaron la atencion, no se si seran muchas, pero espero me puedan aclarar la duda y ayudarme a Declararlas y las que se puedan pues darme un ejemplo en VB 2008.

sin ofender pero: si les parece mucha molestia o creen que pierden el tiempo, o creen que me estan "regalando el trabajo" o haciendome pasar por el papel de "vago", simplemente no escriban nada.

para mi es mas facil aprender con ejemplos que investigando algo que no he visto jamas.. en cambio con un ejemplo sencillo voy aprendiendo poco a poco.

saludos y gracias a quien me pueda ayudar..