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Added SafeHandles, see here: http://blogs.msdn.com/b/bclteam/archive/2005/03/15/396335.aspx to some of the Greenshot code. Not all possible handles have been converted, this should be done to prevent more possible memory/resource leaks.

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git-svn-id: http://svn.code.sf.net/p/greenshot/code/trunk@2427 7dccd23d-a4a3-4e1f-8c07-b4c1b4018ab4
This commit is contained in:
RKrom 2013-01-13 15:53:35 +00:00
commit 502abed36a
5 changed files with 87 additions and 42 deletions
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22
GreenshotPlugin/UnmanagedHelpers/User32.cs
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@ -25,6 +25,8 @@ using System.Drawing;
using System.Runtime.InteropServices;
using System.Text;
using Microsoft.Win32.SafeHandles;
namespace GreenshotPlugin.UnmanagedHelpers {
/// <summary>
/// Used with EnumWindows or EnumChildWindows
@ -45,6 +47,22 @@ namespace GreenshotPlugin.UnmanagedHelpers {
/// <param name="dwEventThread"></param>
/// <param name="dwmsEventTime"></param>
public delegate void WinEventDelegate(IntPtr hWinEventHook, WinEvent eventType, IntPtr hwnd, EventObjects idObject, int idChild, uint dwEventThread, uint dwmsEventTime);
/// <summary>
/// A SafeHandle class implementation for the hIcon
/// </summary>
public class SafeIconHandle : SafeHandleZeroOrMinusOneIsInvalid {
private SafeIconHandle(): base(true) {
}
public SafeIconHandle(IntPtr hIcon) : base(true) {
this.SetHandle(hIcon);
}
protected override bool ReleaseHandle() {
return User32.DestroyIcon(this.handle);
}
}
/// <summary>
/// User32 Wrappers
@ -210,13 +228,13 @@ namespace GreenshotPlugin.UnmanagedHelpers {
/// <param name="hIcon"></param>
/// <returns></returns>
[DllImport("user32", SetLastError = true)]
public static extern IntPtr CopyIcon(IntPtr hIcon);
public static extern SafeIconHandle CopyIcon(IntPtr hIcon);
[DllImport("user32", SetLastError = true)]
public static extern bool DestroyIcon(IntPtr hIcon);
[DllImport("user32", SetLastError = true)]
public static extern bool GetCursorInfo(out CursorInfo cursorInfo);
[DllImport("user32", SetLastError = true)]
public static extern bool GetIconInfo(IntPtr hIcon, out IconInfo iconInfo);
public static extern bool GetIconInfo(SafeIconHandle iconHandle, out IconInfo iconInfo);
[DllImport("user32", SetLastError = true)]
public static extern bool DrawIcon(IntPtr hDC, int X, int Y, IntPtr hIcon);
[DllImport("user32", SetLastError = true)]