90 lines
2.9 KiB
C#
90 lines
2.9 KiB
C#
using System;
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using System.Runtime.InteropServices;
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using System.Windows.Forms;
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using System.Text;
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namespace AyaNova.Plugin.QuickNotification
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{
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public static class Win32Utility
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{
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[DllImport("user32.dll", CharSet = CharSet.Auto)]
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private static extern Int32 SendMessage(IntPtr hWnd, int msg,
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int wParam, [MarshalAs(UnmanagedType.LPWStr)] string lParam);
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[DllImport("user32.dll")]
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private static extern bool SendMessage(IntPtr hwnd, int msg, int wParam, StringBuilder lParam);
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[DllImport("user32.dll")]
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private static extern bool GetComboBoxInfo(IntPtr hwnd, ref COMBOBOXINFO pcbi);
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[StructLayout(LayoutKind.Sequential)]
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private struct COMBOBOXINFO
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{
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public int cbSize;
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public RECT rcItem;
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public RECT rcButton;
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public IntPtr stateButton;
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public IntPtr hwndCombo;
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public IntPtr hwndItem;
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public IntPtr hwndList;
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}
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[StructLayout(LayoutKind.Sequential)]
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private struct RECT
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{
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public int left;
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public int top;
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public int right;
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public int bottom;
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}
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private const int EM_SETCUEBANNER = 0x1501;
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private const int EM_GETCUEBANNER = 0x1502;
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public static void SetCueText(Control control, string text)
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{
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if (control is ComboBox)
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{
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COMBOBOXINFO info = GetComboBoxInfo(control);
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SendMessage(info.hwndItem, EM_SETCUEBANNER, 0, text);
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}
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else
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{
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SendMessage(control.Handle, EM_SETCUEBANNER, 0, text);
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}
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}
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private static COMBOBOXINFO GetComboBoxInfo(Control control)
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{
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COMBOBOXINFO info = new COMBOBOXINFO();
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//a combobox is made up of three controls, a button, a list and textbox;
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//we want the textbox
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info.cbSize = Marshal.SizeOf(info);
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GetComboBoxInfo(control.Handle, ref info);
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return info;
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}
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public static string GetCueText(Control control)
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{
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StringBuilder builder = new StringBuilder();
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if (control is ComboBox)
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{
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COMBOBOXINFO info = new COMBOBOXINFO();
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//a combobox is made up of two controls, a list and textbox;
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//we want the textbox
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info.cbSize = Marshal.SizeOf(info);
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GetComboBoxInfo(control.Handle, ref info);
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SendMessage(info.hwndItem, EM_GETCUEBANNER, 0, builder);
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}
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else
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{
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SendMessage(control.Handle, EM_GETCUEBANNER, 0, builder);
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}
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return builder.ToString();
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}
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}
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}
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