VB.net SendMessage Waiting Problem

I use the following code to click on a button to display another form, to click on it:

Dim hwnd As Integer = FindWindow(vbNullString, "Virtual CDRom Control Panel")
Dim x As Integer = FindWindowEx(hwnd, 0, vbNullString, "Driver Control ...")

SendMessage(x, BM_CLICK, 0&, 0&)
Thread.Sleep(200)
hwnd = FindWindow(vbNullString, "Virtual CD-ROM Driver Control")
Debug.Print(hwnd)

The problem is that when he gets to

SendMessage (x, BM_CLICK, 0 &, 0 &)

to press a button, it stops the code there until I exit the window that appears. I want to be able to continue without leaving the box from the next line

hwnd = FindWindow (vbNullString, "Virtual CD-ROM Driver Management")

finds a popup and clicks on a button inside that window.

Any help would be wonderful !: O)

David

solvable

Private Declare Function FindWindow Lib "user32.dll" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As IntPtr
Private Declare Function FindWindowEx Lib "user32.dll" Alias "FindWindowExA" (ByVal hWndParent As IntPtr, ByVal hWndChildAfter As Integer, ByVal lpClassName As String, ByVal lpWindowName As String) As IntPtr
Private Declare Function SendMessage Lib "user32.dll" Alias "SendMessageA" (ByVal hWnd As IntPtr, ByVal wMsg As Integer, ByVal wParam As Integer, ByVal lParam As IntPtr) As IntPtr
Private Declare Function PostMessage Lib "user32.dll" Alias "PostMessageA" (ByVal hwnd As IntPtr, ByVal wMsg As Integer, ByVal wParam As Integer, ByVal lParam As IntPtr) As IntPtr

Dim hwnd As IntPtr = FindWindow(vbNullString, "Virtual CDRom Control Panel")
Dim x As IntPtr = FindWindowEx(hwnd, 0, vbNullString, "Driver Control ...")

PostMessage(x, BM_CLICK, 0&, 0&)
Thread.Sleep(200)
hwnd = FindWindow(vbNullString, "Virtual CD-ROM Driver Control")
Debug.Print(hwnd)
+3
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1 answer

Try changing SendMessageto PostMessage.

, HWND IntPtr.
wParam lParam SendMessage PostMessage IntPtr s.
x64.

+5

Source: https://habr.com/ru/post/1795750/


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