在VB中用API创建窗体和VC中的步骤是一样的,只不过用IDE环境创建是把过程都封装起来,现 Public Declare Function RegisterClass Lib "user32" Alias "RegisterClassA" (Class As WNDCLASS) As Long Public Declare Function UnregisterClass Lib "user32" Alias "UnregisterClassA" (ByVal lpClassName As String, ByVal hInstance As Long) As Long Public Declare Function DefWindowProc Lib "user32" Alias "DefWindowProcA" (ByVal hwnd 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 hwnd 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 Function ShowWindow Lib "user32" (ByVal hwnd As Long, ByVal nCmdShow As Long) As Long Public Declare Function LoadCursor Lib "user32" Alias "LoadCursorA" (ByVal hInstance As Long, ByVal lpCursorName 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 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 CallWindowProc Lib "user32" Alias "CallWindowProcA" (ByVal lpPrevWndFunc As Long, ByVal hwnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long Public Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long Public Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) As Long Public Declare Function MessageBox Lib "user32" Alias "MessageBoxA" (ByVal hwnd As Long, ByVal lpText As String, ByVal lpCaption As String, ByVal wType As Long) As Long Public Declare Sub PostQuitMessage Lib "user32" (ByVal nExitCode As Long) Public Type WNDCLASS style As Long lpfnwndproc As Long cbClsextra As Long cbWndExtra2 As Long hInstance As Long hIcon As Long hCursor As Long hbrBackground As Long lpszMenuName As String lpszClassName As String End Type Public Type POINTAPI x As Long y As Long End Type Public Type Msg hwnd As Long message As Long wParam As Long lParam As Long time As Long pt As POINTAPI End TypePublic Const CS_VREDRAW = &H1 Public Const CS_HREDRAW = &H2Public Const CW_USEDEFAULT = &H80000000Public Const ES_MULTILINE = &H4&Public Const WS_BORDER = &H800000 Public Const WS_CHILD = &H40000000 Public Const WS_OVERLAPPED = &H0& Public Const WS_CAPTION = &HC00000 ' WS_BORDER Or WS_DLGFRAME Public Const WS_SYSMENU = &H80000 Public Const WS_THICKFRAME = &H40000 Public Const WS_MINIMIZEBOX = &H20000 Public Const WS_MAXIMIZEBOX = &H10000 Public Const WS_OVERLAPPEDWINDOW = (WS_OVERLAPPED Or WS_CAPTION Or WS_SYSMENU Or WS_THICKFRAME Or WS_MINIMIZEBOX Or WS_MAXIMIZEBOX)Public Const WS_EX_CLIENTEDGE = &H200&Public Const COLOR_WINDOW = 5Public Const WM_DESTROY = &H2 Public Const WM_LBUTTONDOWN = &H201 Public Const WM_LBUTTONUP = &H202Public Const IDC_ARROW = 32512&Public Const IDI_APPLICATION = 32512&Public Const GWL_WNDPROC = (-4)Public Const SW_SHOWNORMAL = 1Public Const MB_OK = &H0& Public Const MB_ICONEXCLAMATION = &H30& 声明几个我们需要的变量、常量:
Public Const gClassName = "MyClassName" Public Const gAppName = "My Window Caption"Public gButOldProc As Long Public gHwnd As Long, gButtonHwnd As Long, gEditHwnd As Long 入口函数:Sub Main代码如下:Public Sub Main() Dim wMsg As Msg ''Call procedure to register window classname. If false, then exit. If RegisterWindowClass = False Then Exit Sub
''Create window If CreateWindows Then ''Loop will exit when WM_QUIT is sent to the window. Do While GetMessage(wMsg, 0&, 0&, 0&) ''TranslateMessage takes keyboard messages and converts ''them to WM_CHAR for easier processing. Call TranslateMessage(wMsg) ''Dispatchmessage calls the default window procedure ''to process the window message. (WndProc) Call DispatchMessage(wMsg) Loop End If Call UnregisterClass(gClassName$, App.hInstance) End SubPublic Function RegisterWindowClass() As Boolean Dim wc As WNDCLASS
wc.style = CS_HREDRAW Or CS_VREDRAW wc.lpfnwndproc = GetAddress(AddressOf WndProc) ''Address in memory of default window procedure. wc.hInstance = App.hInstance wc.hIcon = LoadIcon(0&, IDI_APPLICATION) ''Default application icon wc.hCursor = LoadCursor(0&, IDC_ARROW) ''Default arrow wc.hbrBackground = COLOR_WINDOW ''Default a color for window. wc.lpszClassName = gClassName$ RegisterWindowClass = RegisterClass(wc) <> 0
End Function Public Function CreateWindows() As Boolean
''Set default window procedure of button to ButtonWndProc. Different ''settings of windows is listed in the MSDN Library. We are using GWL _WNDPROC ''to set the address of the window procedure.指向新的处理过程地址 Call SetWindowLong(gButtonHwnd&, GWL_WNDPROC, GetAddress(AddressOf ButtonWndProc)) CreateWindows = (gHwnd& <> 0)
End Function'窗体运行的主函数,在注册这个窗体时已经指定的 Public Function WndProc(ByVal hwnd As Long, ByVal uMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long Dim strTemp As String处理消息,这里指处理了WM_DESTROY消息 Select Case uMsg& Case WM_DESTROY: ''Since DefWindowProc doesn't automatically call ''PostQuitMessage (WM_QUIT). We need to do it ourselves. ''You can use DestroyWindow to get rid of the window manually. Call PostQuitMessage(0&) End Select ''Let windows call the default window procedure since we're done. WndProc = DefWindowProc(hwnd&, uMsg&, wParam&, lParam&)End Function又添加了一个Button的处理过程Public Function ButtonWndProc(ByVal hwnd As Long, ByVal uMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long Select Case uMsg& Case WM_LBUTTONUP: Call MessageBox(gHwnd&, "You clicked the button!", App.Title, MB_OK Or MB_ICONEXCLAMATION) End Select
大家说说如通过其他方法来实现,最好是调用API,谢谢!
Public Declare Function RegisterClass Lib "user32" Alias "RegisterClassA" (Class
As WNDCLASS) As Long
Public Declare Function UnregisterClass Lib "user32" Alias "UnregisterClassA"
(ByVal lpClassName As String, ByVal hInstance As Long) As Long
Public Declare Function DefWindowProc Lib "user32" Alias "DefWindowProcA" (ByVal
hwnd 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 hwnd 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 Function ShowWindow Lib "user32" (ByVal hwnd As Long, ByVal
nCmdShow As Long) As Long
Public Declare Function LoadCursor Lib "user32" Alias "LoadCursorA" (ByVal
hInstance As Long, ByVal lpCursorName 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 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 CallWindowProc Lib "user32" Alias "CallWindowProcA"
(ByVal lpPrevWndFunc As Long, ByVal hwnd As Long, ByVal Msg As Long, ByVal wParam As
Long, ByVal lParam As Long) As Long
Public Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal
hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Public Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal
hwnd As Long, ByVal nIndex As Long) As Long
Public Declare Function MessageBox Lib "user32" Alias "MessageBoxA" (ByVal hwnd
As Long, ByVal lpText As String, ByVal lpCaption As String, ByVal wType As Long)
As Long
Public Declare Sub PostQuitMessage Lib "user32" (ByVal nExitCode As Long)
Public Type WNDCLASS
style As Long
lpfnwndproc As Long
cbClsextra As Long
cbWndExtra2 As Long
hInstance As Long
hIcon As Long
hCursor As Long
hbrBackground As Long
lpszMenuName As String
lpszClassName As String
End Type
Public Type POINTAPI
x As Long
y As Long
End Type
Public Type Msg
hwnd As Long
message As Long
wParam As Long
lParam As Long
time As Long
pt As POINTAPI
End TypePublic Const CS_VREDRAW = &H1
Public Const CS_HREDRAW = &H2Public Const CW_USEDEFAULT = &H80000000Public Const ES_MULTILINE = &H4&Public Const WS_BORDER = &H800000
Public Const WS_CHILD = &H40000000
Public Const WS_OVERLAPPED = &H0&
Public Const WS_CAPTION = &HC00000 ' WS_BORDER Or WS_DLGFRAME
Public Const WS_SYSMENU = &H80000
Public Const WS_THICKFRAME = &H40000
Public Const WS_MINIMIZEBOX = &H20000
Public Const WS_MAXIMIZEBOX = &H10000
Public Const WS_OVERLAPPEDWINDOW = (WS_OVERLAPPED Or WS_CAPTION Or WS_SYSMENU Or
WS_THICKFRAME Or WS_MINIMIZEBOX Or WS_MAXIMIZEBOX)Public Const WS_EX_CLIENTEDGE = &H200&Public Const COLOR_WINDOW = 5Public Const WM_DESTROY = &H2
Public Const WM_LBUTTONDOWN = &H201
Public Const WM_LBUTTONUP = &H202Public Const IDC_ARROW = 32512&Public Const IDI_APPLICATION = 32512&Public Const GWL_WNDPROC = (-4)Public Const SW_SHOWNORMAL = 1Public Const MB_OK = &H0&
Public Const MB_ICONEXCLAMATION = &H30&
声明几个我们需要的变量、常量:
Public Const gAppName = "My Window Caption"Public gButOldProc As Long
Public gHwnd As Long, gButtonHwnd As Long, gEditHwnd As Long 入口函数:Sub Main代码如下:Public Sub Main() Dim wMsg As Msg ''Call procedure to register window classname. If false, then exit.
If RegisterWindowClass = False Then Exit Sub
''Create window
If CreateWindows Then
''Loop will exit when WM_QUIT is sent to the window.
Do While GetMessage(wMsg, 0&, 0&, 0&)
''TranslateMessage takes keyboard messages and converts
''them to WM_CHAR for easier processing.
Call TranslateMessage(wMsg)
''Dispatchmessage calls the default window procedure
''to process the window message. (WndProc)
Call DispatchMessage(wMsg)
Loop
End If Call UnregisterClass(gClassName$, App.hInstance)
End SubPublic Function RegisterWindowClass() As Boolean Dim wc As WNDCLASS
wc.style = CS_HREDRAW Or CS_VREDRAW
wc.lpfnwndproc = GetAddress(AddressOf WndProc) ''Address in memory of
default window procedure.
wc.hInstance = App.hInstance
wc.hIcon = LoadIcon(0&, IDI_APPLICATION) ''Default application icon
wc.hCursor = LoadCursor(0&, IDC_ARROW) ''Default arrow
wc.hbrBackground = COLOR_WINDOW ''Default a color for window.
wc.lpszClassName = gClassName$ RegisterWindowClass = RegisterClass(wc) <> 0
End Function
Public Function CreateWindows() As Boolean
''开始创建窗体主窗体.
gHwnd& = CreateWindowEx(0&, gClassName$, gAppName$, WS_OVERLAPPEDWINDOW, CW
_USEDEFAULT, CW_USEDEFAULT, 208, 150, 0&, 0&, App.hInstance, ByVal 0&)
''创建一个按钮
gButtonHwnd& = CreateWindowEx(0&, "Button", "Click Here", WS_CHILD, 58, 90,
85, 25, gHwnd&, 0&, App.hInstance, 0&)
''创建一个(WS_EX_CLIENTEDGE、ES_MULTILINE风格的TextBox
gEditHwnd& = CreateWindowEx(WS_EX_CLIENTEDGE, "Edit", "This is the edit
control." & vbCrLf & "As you can see, it's multiline.", WS_CHILD Or ES_MULTILINE, 0&,
0&, 200, 80, gHwnd&, 0&, App.hInstance, 0&)"Button ","Edit"系统中已经注册过了所以这里直接用
创建完别忘了显示出来否则是隐藏的 Call ShowWindow(gHwnd&, SW_SHOWNORMAL)
Call ShowWindow(gButtonHwnd&, SW_SHOWNORMAL)
Call ShowWindow(gEditHwnd&, SW_SHOWNORMAL)记下按钮处理过错的当前所在地址 gButOldProc& = GetWindowLong(gButtonHwnd&, GWL_WNDPROC)
''Set default window procedure of button to ButtonWndProc. Different
''settings of windows is listed in the MSDN Library. We are using GWL
_WNDPROC
''to set the address of the window procedure.指向新的处理过程地址
Call SetWindowLong(gButtonHwnd&, GWL_WNDPROC, GetAddress(AddressOf
ButtonWndProc)) CreateWindows = (gHwnd& <> 0)
End Function'窗体运行的主函数,在注册这个窗体时已经指定的
Public Function WndProc(ByVal hwnd As Long, ByVal uMsg As Long, ByVal wParam As
Long, ByVal lParam As Long) As Long Dim strTemp As String处理消息,这里指处理了WM_DESTROY消息 Select Case uMsg&
Case WM_DESTROY:
''Since DefWindowProc doesn't automatically call
''PostQuitMessage (WM_QUIT). We need to do it ourselves.
''You can use DestroyWindow to get rid of the window manually.
Call PostQuitMessage(0&)
End Select
''Let windows call the default window procedure since we're done.
WndProc = DefWindowProc(hwnd&, uMsg&, wParam&, lParam&)End Function又添加了一个Button的处理过程Public Function ButtonWndProc(ByVal hwnd As Long, ByVal uMsg As Long, ByVal
wParam As Long, ByVal lParam As Long) As Long Select Case uMsg&
Case WM_LBUTTONUP:
Call MessageBox(gHwnd&, "You clicked the button!", App.Title, MB_OK Or
MB_ICONEXCLAMATION)
End Select
ButtonWndProc = CallWindowProc(gButOldProc&, hwnd&, uMsg&, wParam&, lParam&)
End Function
Public Function GetAddress(ByVal lngAddr As Long) As Long
GetAddress = lngAddr&
End Function
为什么您总是来不来就搞个very long的代码,而且,总是用api然后再定义一些常量。
用VB写的SDK?牛B!
我问的是如何动态地创建修改窗体菜单(非快捷菜单)并响应事件啊.我想能不能先用VB创建一个窗体,然后用API动态创建菜单,并把菜单挂到窗体上去,替换窗体原来的菜单,.我用 SetMenu 和 DrawMenuBar 函数,可菜单还是没有显示出来,不知道是为什么.