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Try to improve control flicker

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This commit is contained in:
Justin Aquadro 2013-12-18 22:45:05 -05:00
parent 366ec3fe9e
commit 5d51967501
3 changed files with 92 additions and 2 deletions
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64
NBTExplorer/Interop.cs Normal file
View file

@ -0,0 +1,64 @@
using System;
using System.Runtime.InteropServices;
namespace NBTExplorer
{
internal static class Interop
{
public static bool WinInteropAvailable
{
get { return IsWindows && Type.GetType("Mono.Runtime") == null; }
}
public static bool IsWindows
{
get { return Environment.OSVersion.Platform == PlatformID.Win32NT; }
}
public static bool IsWinXP
{
get
{
OperatingSystem OS = Environment.OSVersion;
return (OS.Platform == PlatformID.Win32NT) &&
((OS.Version.Major > 5) || ((OS.Version.Major == 5) && (OS.Version.Minor == 1)));
}
}
public static bool IsWinVista
{
get
{
OperatingSystem OS = Environment.OSVersion;
return (OS.Platform == PlatformID.Win32NT) && (OS.Version.Major >= 6);
}
}
public static IntPtr SendMessage (IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam)
{
if (WinInteropAvailable)
return NativeInterop.SendMessage(hWnd, msg, wParam, lParam);
else
return IntPtr.Zero;
}
}
internal static class NativeInterop
{
public const int WM_PRINTCLIENT = 0x0318;
public const int PRF_CLIENT = 0x00000004;
public const int TV_FIRST = 0x1100;
public const int TVM_SETBKCOLOR = TV_FIRST + 29;
public const int TVM_SETEXTENDEDSTYLE = TV_FIRST + 44;
public const int TVS_EX_DOUBLEBUFFER = 0x0004;
[DllImport("user32.dll")]
public static extern IntPtr SendMessage (IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam);
}
}

3
NBTExplorer/NBTExplorer.csproj
View file

@ -12,6 +12,7 @@
<AssemblyName>NBTExplorer</AssemblyName>
<TargetFrameworkVersion>v2.0</TargetFrameworkVersion>
<FileAlignment>512</FileAlignment>
<IsWebBootstrapper>false</IsWebBootstrapper>
<PublishUrl>publish\</PublishUrl>
<Install>true</Install>
<InstallFrom>Disk</InstallFrom>
@ -24,7 +25,6 @@
<MapFileExtensions>true</MapFileExtensions>
<ApplicationRevision>0</ApplicationRevision>
<ApplicationVersion>1.0.0.%2a</ApplicationVersion>
<IsWebBootstrapper>false</IsWebBootstrapper>
<UseApplicationTrust>false</UseApplicationTrust>
<BootstrapperEnabled>true</BootstrapperEnabled>
</PropertyGroup>
@ -100,6 +100,7 @@
<Compile Include="Controllers\NodeTreeController.cs" />
<Compile Include="FormRegistry.cs" />
<Compile Include="Controllers\RuleTreeController.cs" />
<Compile Include="Interop.cs" />
<Compile Include="Model\Search\SearchRule.cs" />
<Compile Include="NbtClipboardController.cs" />
<Compile Include="SnapshotList.cs" />

27
NBTExplorer/Vendor/MultiSelectTreeView/MultiSelectTreeview.cs vendored
View file

@ -11,7 +11,6 @@ namespace NBTExplorer.Vendor.MultiSelectTreeView
{
public class MultiSelectTreeView : TreeView
{
#region Selected Node(s) Properties
private List<TreeNode> m_SelectedNodes = null;
@ -57,14 +56,40 @@ namespace NBTExplorer.Vendor.MultiSelectTreeView
public MultiSelectTreeView()
{
DoubleBuffered = true;
SetStyle(ControlStyles.OptimizedDoubleBuffer | ControlStyles.AllPaintingInWmPaint, true);
m_SelectedNodes = new List<TreeNode>();
base.SelectedNode = null;
}
private void UpdateExtendedStyles ()
{
if (Interop.WinInteropAvailable) {
int style = 0;
if (DoubleBuffered)
style |= NativeInterop.TVS_EX_DOUBLEBUFFER;
if (style != 0)
Interop.SendMessage(Handle, NativeInterop.TVM_SETEXTENDEDSTYLE, (IntPtr)NativeInterop.TVS_EX_DOUBLEBUFFER, (IntPtr)style);
}
}
#region Overridden Events
protected override void OnHandleCreated (EventArgs e)
{
base.OnHandleCreated(e);
if (Interop.WinInteropAvailable) {
UpdateExtendedStyles();
if (!Interop.IsWinXP)
Interop.SendMessage(Handle, NativeInterop.TVM_SETBKCOLOR, IntPtr.Zero, (IntPtr)ColorTranslator.ToWin32(BackColor));
}
}
protected override void OnGotFocus( EventArgs e )
{
// Make sure at least one node has a selection