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Option Explicit
Public Declare Function CreateWindowEx Lib "user32" Alias "CreateWindowExA" (ByVal dwExStyle As Long, ByVal lpClassName As String, ByVal lpWindowName As String, ByVal dwStyle As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hWndParent As Long, ByVal hMenu As Long, ByVal hInstance As Long, lpParam As Any) As Long
Public Declare Function LoadIcon Lib "user32" Alias "LoadIconA" (ByVal hInstance As Long, ByVal lpIconName As String) As Long
Public Declare Function LoadCursor Lib "user32" Alias "LoadCursorA" (ByVal hInstance As Long, ByVal lpCursorName As String) As Long
Public Declare Function GetStockObject Lib "gdi32" (ByVal nIndex As Long) As Long
Public Declare Function RegisterClassEx Lib "user32" Alias "RegisterClassExA" (pcWndClassEx As WNDCLASSEX) As Integer
Public Declare Function ShowWindow Lib "user32" (ByVal handle_of_window As Long, ByVal nCmdShow As Long) As Long
Public Declare Function UpdateWindow Lib "user32" (ByVal handle_of_window As Long) As Long
Public Declare Function SetFocus Lib "user32" (ByVal handle_of_window As Long) As Long
Public Declare Function PostMessage Lib "user32" Alias "PostMessageA" (ByVal handle_of_window As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Public Declare Function DefWindowProc Lib "user32" Alias "DefWindowProcA" (ByVal handle_of_window As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Public Declare Function GetMessage Lib "user32" Alias "GetMessageA" (lpMsg As MSG, ByVal handle_of_window As Long, ByVal wMsgFilterMin As Long, ByVal wMsgFilterMax As Long) As Long
Public Declare Function TranslateMessage Lib "user32" (lpMsg As MSG) As Long
Public Declare Function DispatchMessage Lib "user32" Alias "DispatchMessageA" (lpMsg As MSG) As Long
Public Declare Sub PostQuitMessage Lib "user32" (ByVal nExitCode As Long)
Public Declare Function BeginPaint Lib "user32" (ByVal handle_of_window As Long, lpPaint As PAINTSTRUCT) As Long
Public Declare Function EndPaint Lib "user32" (ByVal handle_of_window As Long, lpPaint As PAINTSTRUCT) As Long
Public Declare Function GetClientRect Lib "user32" (ByVal handle_of_window As Long, lpRect As RECT) As Long
Public Declare Function DrawText Lib "user32" Alias "DrawTextA" (ByVal hdc As Long, ByVal lpStr As String, ByVal nCount As Long, lpRect As RECT, ByVal wFormat As Long) As Long
Type WNDCLASSEX
cbSize As Long
style As Long
lpfnWndProc As Long
cbClsExtra As Long
cbWndExtra As Long
hInstance As Long
hIcon As Long
hCursor As Long
hbrBackground As Long
lpszMenuName As String
lpszClassName As String
hIconSm As Long
End Type
Type POINTAPI
x As Long
y As Long
End Type
Type MSG
handle_of_window As Long
message As Long
wParam As Long
lParam As Long
time As Long
pt As POINTAPI
End Type
Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Type PAINTSTRUCT
hdc As Long
fErase As Long
rcPaint As RECT
fRestore As Long
fIncUpdate As Long
rgbReserved(32) As Byte ''''this was declared incorrectly in VB API viewer
End Type
Public Const WS_VISIBLE As Long = &H10000000
Public Const WS_VSCROLL As Long = &H200000
Public Const WS_TABSTOP As Long = &H10000
Public Const WS_THICKFRAME As Long = &H40000
Public Const WS_MAXIMIZE As Long = &H1000000
Public Const WS_MAXIMIZEBOX As Long = &H10000
Public Const WS_MINIMIZE As Long = &H20000000
Public Const WS_MINIMIZEBOX As Long = &H20000
Public Const WS_SYSMENU As Long = &H80000
Public Const WS_BORDER As Long = &H800000
Public Const WS_CAPTION As Long = &HC00000 '''' WS_BORDER Or WS_DLGFRAME
Public Const WS_CHILD As Long = &H40000000
Public Const WS_CHILDWINDOW As Long = (WS_CHILD)
Public Const WS_CLIPCHILDREN As Long = &H2000000
Public Const WS_CLIPSIBLINGS As Long = &H4000000
Public Const WS_DISABLED As Long = &H8000000
Public Const WS_DLGFRAME As Long = &H400000
Public Const WS_EX_ACCEPTFILES As Long = &H10&
Public Const WS_EX_DLGMODALFRAME As Long = &H1&
Public Const WS_EX_NOPARENTNOTIFY As Long = &H4&
Public Const WS_EX_TOPMOST As Long = &H8&
Public Const WS_EX_TRANSPARENT As Long = &H20&
Public Const WS_GROUP As Long = &H20000
Public Const WS_HSCROLL As Long = &H100000
Public Const WS_ICONIC As Long = WS_MINIMIZE
Public Const WS_OVERLAPPED As Long = &H0&
Public Const WS_OVERLAPPEDWINDOW As Long = (WS_OVERLAPPED Or WS_CAPTION Or WS_SYSMENU Or WS_THICKFRAME Or WS_MINIMIZEBOX Or WS_MAXIMIZEBOX)
Public Const WS_POPUP As Long = &H80000000
Public Const WS_POPUPWINDOW As Long = (WS_POPUP Or WS_BORDER Or WS_SYSMENU)
Public Const WS_SIZEBOX As Long = WS_THICKFRAME
Public Const WS_TILED As Long = WS_OVERLAPPED
Public Const WS_TILEDWINDOW As Long = WS_OVERLAPPEDWINDOW
Public Const CW_USEDEFAULT As Long = &H80000000
Public Const CS_HREDRAW As Long = &H2
Public Const CS_VREDRAW As Long = &H1
Public Const IDI_APPLICATION As Long = 32512&
Public Const IDC_ARROW As Long = 32512&
Public Const WHITE_BRUSH As Integer = 0
Public Const BLACK_BRUSH As Integer = 4
Public Const WM_KEYDOWN As Long = &H100
Public Const WM_CLOSE As Long = &H10
Public Const WM_DESTROY As Long = &H2
Public Const WM_PAINT As Long = &HF
Public Const SW_SHOWNORMAL As Long = 1
Public Const DT_CENTER As Long = &H1
Public Const DT_SINGLELINE As Long = &H20
Public Const DT_VCENTER As Long = &H4
Sub Main()
Call vbWinMain
End Sub
Public Function vbWinMain() As Long
Const CLASSNAME = "hello_world_vb"
Const TITLE = "hello, world!"
Dim handle_of_window As Long
Dim window_class As WNDCLASSEX
Dim message As MSG
window_class.cbSize = Len(window_class)
window_class.style = CS_HREDRAW Or CS_VREDRAW
window_class.lpfnWndProc = GetFuncPtr(AddressOf WindowProc)
window_class.cbClsExtra = 0&
window_class.cbWndExtra = 0&
window_class.hInstance = App.hInstance
window_class.hIcon = LoadIcon(App.hInstance, IDI_APPLICATION)
window_class.hCursor = LoadCursor(App.hInstance, IDC_ARROW)
window_class.hbrBackground = GetStockObject(WHITE_BRUSH)
window_class.lpszMenuName = 0&
window_class.lpszClassName = CLASSNAME
window_class.hIconSm = LoadIcon(App.hInstance, IDI_APPLICATION)
RegisterClassEx window_class
handle_of_window = CreateWindowEx(0&, CLASSNAME, TITLE, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, 0&, 0&, App.hInstance, 0&)
ShowWindow handle_of_window, SW_SHOWNORMAL
UpdateWindow handle_of_window
SetFocus handle_of_window
Do While 0 <> GetMessage(message, 0&, 0&, 0&)
TranslateMessage message
DispatchMessage message
Loop
vbWinMain = message.wParam
End Function
Public Function WindowProc(ByVal handle_of_window As Long, ByVal message As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Dim ps As PAINTSTRUCT
Dim rc As RECT
Dim hdc As Long
Dim str As String
Select Case message
Case WM_PAINT
&nbs
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