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POHow can I retrieve the values from window of class "ThunderRT6ListBox" using user32.dll in c#
 

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  1. POHow can I retrieve the values from window of class "ThunderRT6ListBox" using user32.dll in c#
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    <p>I am trying to retrieve information from extern desktop aplication in Windows.</p> <p>I know how extract the text from Textboxes (class "Edit") but I don't know how extract the values from controls with class name "ThunderRT6ListBox" and "ThunderRT6ComboBox". How can I do that?</p> <p>I have this code to extract the text from the textbox:</p> <pre><code>public static class ModApi { [DllImport("user32.dll", EntryPoint = "FindWindowA", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)] public static extern IntPtr FindWindow(string lpClassName, string lpWindowName); [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)] public static extern int GetClassName(IntPtr hWnd, StringBuilder lpClassName, int nMaxCount); [DllImport("user32.dll", EntryPoint = "SendMessageTimeout", SetLastError = true, CharSet = CharSet.Auto)] public static extern uint SendMessageTimeoutText(IntPtr hWnd, int Msg, int countOfChars, StringBuilder text, uint flags, uint uTImeoutj, uint result); [DllImport("user32.dll", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)] static internal extern bool EnumChildWindows(IntPtr hWndParent, funcCallBackChild funcCallBack, IntPtr lParam); [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = false)] static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, IntPtr wParam, StringBuilder lParam); const int LB_GETCOUNT = 0x018B; const int LB_GETTEXT = 0x0189; public static string GetText(IntPtr hwnd) { var text = new StringBuilder(1024); if (SendMessageTimeoutText(hwnd, 0xd, 1024, text, 0x2, 1000, 0) != 0) { return text.ToString(); } return ""; } } public foo() { IntPtr value = new IntPtr(0x019C086A); //ID locate using Spy++ String caption = ModApi.GetText(value); } </code></pre> <p>UPDATE 1:</p> <p>The way to read from ListBox:</p> <pre><code> public static List&lt;string&gt; GetListBoxContents(IntPtr listBoxHwnd) { int cnt = (int)SendMessage(listBoxHwnd, LB_GETCOUNT, IntPtr.Zero, null); List&lt;string&gt; listBoxContent = new List&lt;string&gt;(); for (int i = 0; i &lt; cnt; i++) { StringBuilder sb = new StringBuilder(256); IntPtr getText = SendMessage(listBoxHwnd, LB_GETTEXT, (IntPtr)i, sb); listBoxContent.Add(sb.ToString()); } return listBoxContent; } </code></pre> <p>UPDATE 2:</p> <p>The way to read from ComboBox:</p> <pre><code> public static List&lt;string&gt; GetComboBoxContents(IntPtr cbBoxHwnd) { int cnt = (int)SendMessage(cbBoxHwnd, CB_GETCOUNT, IntPtr.Zero, null); List&lt;string&gt; listBoxContent = new List&lt;string&gt;(); for (int i = 0; i &lt; cnt; i++) { //int txtLength = SendMessage(cbBoxHwnd, CB_GETLBTEXTLEN, i, 0); StringBuilder sb = new StringBuilder(256); IntPtr getText = SendMessage(cbBoxHwnd, CB_GETLBTEXT, (IntPtr)i, sb); listBoxContent.Add(sb.ToString()); } return listBoxContent; } </code></pre>
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    1. COWell, seems you already know about LB_GETTEXT. Why are you not using it?
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      1. POHow can I retrieve the values from window of class "ThunderRT6ListBox" using user32.dll in c#
      1. USHans Passant
 

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