vb程序中webbrowser 接受SendMessage 的消息
webbrowser 不能收到SendMessage的消息
主要是因为1webbrowser 的句柄找不到。经过努力搜索，终于解决了。做个记录.
Private Declare Function PostMessage Lib "user32" Alias "PostMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As String, ByVal lpsz2 As String) As Long
Const WM_LBUTTONDOWN = &H201
Const WM_LBUTTONUP = &H202
Const MK_LBUTTON = &H1
'获得webbrowser的句柄
Public Function GetBrowserWindow(窗体句柄 As Long) As Long
Dim hwndPeer As Long
hwndPeer = FindWindowEx(窗体句柄, 0, "Shell Embedding", vbNullString)'网上很多帮助就找到这里就结束了，那是不能收到消息的。
hwndPeer = FindWindowEx(hwndPeer, 0, "Shell DocObject View", vbNullString)
hwndPeer = FindWindowEx(hwndPeer, 0, "Internet Explorer_Server", vbNullString)
GetBrowserWindow = hwndPeer
End Function
'按钮单击
Private Sub 命令_Click()
Dim t As String, x As Long, y As Long, w As WebBrowser, wbhwnd As Long, k As Long
x = 537'从WebBrowser控件左上角起0,0,坐标不是平时left、right、top、height那个坐标，可以直接复制控件到画图里面，看分辨录。
y = 44 * &H10000'弄成高位
wbhwnd = GetBrowserWindow(Form1.hwnd)
k = PostMessage(wbhwnd, WM_LBUTTONDOWN, MK_LBUTTON, ByVal ((y) + x))
k = PostMessage(wbhwnd, WM_LBUTTONUP, 0, (x + (y)))
End Sub
'测试通过。
相关文档：
'代码:
Option Explicit
'======================用于查找进程和终止进程的API函数常数定义================ =====
Private Declare Function CreateToolhelpSnapshot Lib "kernel32" Alias "CreateToolhelp32Snapshot" (ByVal lFlags As Long, ByVal lProcessID As Long) As Long
Private Declare Function ProcessF ......
VB6
在程序运行时用如下语句：
if app.PrevInstance=true then
end
end if
VB 2005:
1. 在VB2005中,打开"属性"页,启用"应用程序“框架, 选中"
单实例应用程序"前面复选框,就行了。
......
MSComm控件提供了两种处理通信的方式：一种为事件驱动方式，该方式相当于一般程序设计中的中断方式。当串口发生事件或错误时，MSComm控件会产生OnComm事件，用户程序可以捕获该事件进行相应处理。本文的两个例子均采用该方式。另一种为查询方式，在用户程序中设计定时或不定时查询 MSComm控件的某些属性是否发生变化，从而� ......
建一个模块
Public Declare Function GetOpenFileName Lib "comdlg32.dll" Alias "GetOpenFileNameA" (pOpenfilename As OPENFILENAME) As Long
Public Type OPENFILENAME
lStructSize As Long
hwndOwner As Long
hInstance As Long
lpstrFilter As String
lpstrCustomFilt ......
Private Sub Form_load()
'判断程序是否已经运行
If App.PrevInstance
Then
MsgBox "本程序已经运行！", vbInformation Or vbOKOnly, "提示信息"
Unload
Me
Exit Sub
&n ......
