UC知道vb向窗体发信息
来源：百度知道 编辑：UC知道 时间：2024/06/16 08:09:28
“Option Explicit
Private Const WM_SETTEXT = &HC
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 GetDlgItem Lib "user32" (ByVal hDlg As Long, ByVal nIDDlgItem As Long) As Long
Private Sub Command1_Click()
Dim s As String
Dim FT_hWnd As Long
Dim ID_Control_hWnd As Long
s = "test" & vbCrLf & "测试"
FT_hWnd = FindWindow("Notepad", vbNullString)
If FT_hWnd = 0 Then
MsgBox "False", vbInformation, "Title"
End
End If
ID_Control_hWnd = GetDlgItem(FT_hWnd, &HF)
Private Const WM_SETTEXT = &HC
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 GetDlgItem Lib "user32" (ByVal hDlg As Long, ByVal nIDDlgItem As Long) As Long
Private Sub Command1_Click()
Dim s As String
Dim FT_hWnd As Long
Dim ID_Control_hWnd As Long
s = "test" & vbCrLf & "测试"
FT_hWnd = FindWindow("Notepad", vbNullString)
If FT_hWnd = 0 Then
MsgBox "False", vbInformation, "Title"
End
End If
ID_Control_hWnd = GetDlgItem(FT_hWnd, &HF)
AppActivate title[, wait]
title 必需的。字符串表达式，所要激活的应用程序窗口的标题。可以使用 Shell 函数返回的任务识别码来替换 title，以激活应用程序。
wait 可选的。Boolean 值，说明在激活另一个应用程序之前调用的应用程序是否有焦点。如果为 False（缺省），那么，即使调用的应用程序没有焦点，也直接激活指定的应用程序。如果为 True，则调用的应用程序会等到有焦点后，才激活指定的应用程序。
大概就是这个意思了吧.
把FindWindow("Notepad", vbNullString)
改成你要的窗口,某些空间还需要使用FindWindowEx继续查找.