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I read the following article on how to draw the contents of an application screen to a bitmap. I am wondering if there is any way to get this to work if the screen is minimized? I would like to do a screen capture of a minimized window, if possible. Does anyone have some ideas as to how I can do this? Thanks,
http://www.codeproject.com/csharp/screen_capturing.asp[^]
Jeff
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Hi Jeff!
I have not yet read that article, it's on my todo list.
An application is or can be aware it is minimized, since it is getting Resize events
(with zero width and height), so chances are it will refuse to paint anything as long as
it is minimized.
So my best guess is restore it to normal size, move it outside the regular screen area
if you don't want to see it (say Location=-30000,-30000), use Control.DrawToBitmap on the
Form, then restore location and state.
I am not sure you can set location before leaving minimized state to avoid a glitch though.
Luc Pattyn [Forum Guidelines] [My Articles]
this months tips:
- use PRE tags to preserve formatting when showing multi-line code snippets
- before you ask a question here, search CodeProject, then Google
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Hello, Im having difficulties with a button with hover text.
I have a standard button that I created a hover event for.
this.gpsInfo.MouseHover += new System.EventHandler(this.gpsInfo_MouseHover);
then i create a tooltip
private void gpsInfo_MouseHover(object sender, EventArgs e)
{
tp = new ToolTip();
tp.Show("GPS Information", gpsInfo);
}
For some stupid reason, the message shows up more than once. So I tried other events like mouse cursor change, when your over the button. And then call the tooltip when the cursor changes, but that doesnt work at all.
Help............... Do I have to go graphics..
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I hate to say use the wizard but if you add a tooltip to the form and then select the given tooltip from the controls properties window it should work nicely.
The end result is:
Create a member: private System.Windows.Forms.ToolTip toolTip1;
In init:
this.toolTip1.SetToolTip(this.button1, "Rwar");
It should work automatically.
Need a C# Consultant? I'm available.
Happiness in intelligent people is the rarest thing I know. -- Ernest Hemingway
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funny enough, i did that a few minutes ago and it worked. But I may take you up on contractor work. Contact me at j_sen21@hotmail.com
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j_sen wrote: For some stupid reason, the message shows up more than once
Maybe because someone felt it necessary to create a new tooltip every time MouseHover fires?
Luc Pattyn [Forum Guidelines] [My Articles]
this months tips:
- use PRE tags to preserve formatting when showing multi-line code snippets
- before you ask a question here, search CodeProject, then Google
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They can be found here:
http://www.codeplex.com/3DTools
Basically there's some problems with using events i can't figure out and i need someone more skilled to figure this out and explain perhaps too.
I added
to
Visual2's first StackPanel in Channel9Demo(appears right above the text box)
and it fires up on middle mouse button and right mouse button but no left mouse button(the button animation still shows beeing pressed by left mouse button though). The other mouse events don't seem to fire up at all. Anyone knows how to work with mouse events using Tools3D? I even tried removing the trackball that works with left mouse button but it didn't change anything. I am wondering too if other events wouldn't work and why. What is the correct approach on this?
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Hi all,
I would like to know how to go about embedding an Excel spreadsheet into a
c# Windows forms application. 
Any tips or pointers to some articles to get me started would be much appreciated.
Thanks for your help
kort
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I have defined a user Exception class. The exception will be thrown in
public int GetNextInt()<br />
{<br />
return Int32.Parse(GetNextToken());<br />
}<br />
GetNextToken() reads a file stream, pulling characters until a predefined delimiters are met (space, end of line, etc) returning the string. I can not change anything in GetNextToken.
If GetNextToken does not return an int value I would like to throw my user defined exception. I have been unable to do so. As soon as as Int32.Parse() finds the input string is not an int it throws an exception.
Is there a way I can throw my user defined exception or use the data field in the predefined exception to add information.
Thanks
this thing looks like it was written by an epileptic ferret
Dave Kreskowiak
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If I were you, I would use Int.TryParse to check if the input string represents a number
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public int GetNextInt()
{
int parsedValue;
bool success = int.TryParse(GetNextToken(), out parsedValue);
if(!success)
{
throw MySuperSpecialException(...);
}
return parsedValue;
}
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public static bool TryParse(string s, out int result);
Int32 myint;
if(!Int32.TryParse(",", out myint))
throw new YourCustomException();
return myint;
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A SUPER special exception? Must be some important error to get that kind of treatment.
My current favourite word is: PIE!
Good ol' pie, it's been a while.
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The original OP wanted to throw their own custom exception...Personally, I prefer to call them all "ABone" and let future maintenance developers sort it out 
EDIT: Or even "AFrikinBone" if you like sharks with lasers...
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The answer is to use Int32.TryParse() .
Modified
Thanks to all for your answers.
this thing looks like it was written by an epileptic ferret
Dave Kreskowiak
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If you need to know what the actual exception was...
public int GetNextInt()
{
try
{
return System.Int32.Parse(GetNextToken());
}
catch ( System.Exception err )
{
throw new MyException ( "blah blah blah" , err ) ;
}
}
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Now, i said i would, so i will http://www.codeproject.com/lounge.asp?msg=2309375#xx2309375xx[^]
Your Majesty,
I have been unable to obtain the icon of an open window for some time, despite my toughest efforts. I have been using SendMessage to send a message to a window, notepad for example, with the message WM_GETICON, and trying to get both small and large icons. This always returns with 0. Ma'am, i would greatly appreciate it if you would help me in solving my dilemma, through use of SendMessage or otherwise. Below you will find an example of the code i am using.
I remain your faithful and humble subject,
The Undefeated
hWnd = IntPtr.Zero;
foreach(Process window in Process.GetProcesses()) {
if(window.MainWindowTitle == this.textBox1.Text)
hWnd = window.MainWindowHandle;
}
if(hWnd == IntPtr.Zero)
MessageBox.Show("Could not find window");
...
if(hWnd != IntPtr.Zero) {
int hIcon = SendMessage(hWnd, 0x7f, 1, 0);
if(hIcon == 0)
MessageBox.Show("Damn, it did it again");
else
this.pictureBox1.Image = Bitmap.FromHicon(new IntPtr(hIcon));
}
Wow, writing my user name "The Undefeated" ugh, its so old. I havn't used it in years, many years, but i thought i should perhaps leave it alone anyway 
My current favourite word is: PIE!
Good ol' pie, it's been a while.
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Such excellence, GetClassLong works like a charm.
Thanks.
My current favourite word is: PIE!
Good ol' pie, it's been a while.
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You are welcome 
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To All:
I'm a newbie at filter graphs and I've been working on building a filter graph to convert/play a .mp3 file to a .wav format and play the music. In my filter graph I have an infinite pin tee filter, which is splitting the output to go to three output devices ( 2 sets of headphones and a set of speakers ). I built the filter graph in GraphEdit and it works fine. It splits the output to the 3 output devices. Now I've taken on the challenge of building this filter graph programmatically and I'm running into some difficulties. When I put my filter graph on the ROT to examine it in GraphEdit, either it's not visible when I try to get the remote graph or I get an error, "Object reference not set to an instance of an object." That's one part that would be useful for debugging. I also read that the physical connections that I created programmatically for the pins may be changed when I render the file, which causes the above error.
The second part is that I may be building my filter graph incorrectly (most likely). Like I said, I'm a newbie at this. The code I have started with, came from a project I found on the net, and then I made quite a few modifications to get where I am now. My code doesn't seem to split the outputs to the different output devices. I only get the music to one headset, and nothing to the others. I'm not sure if it's how I'm finding and connecting my pins, or just how I'm building the filtergraph, which is causing me the problems. I read something on one of the forums last night about building the filter graph the way you would put it together in GraphEdit, so I changed my code to connect pins as I added filters. It still is giving me problems with not splitting the outputs to the devices.
There is one more issue. This is being developed on a Vista machine in C#, but I went to the compatibility tab in the properties for the executable and set it to a Compatibility mode of "Windows XP (Service Pack 2)". Did I say that I do have it working in GraphEdit, with the splitting of the outputs? I have added the code below. If anyone has any suggestions or can help me, I would greatly appreciate it.
Thanks in advance.
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
using System.Runtime.InteropServices;
using DirectShowLib;
public class M2Mkv : Form
{
private Button button1;
private RadioButton MkvRadioButton;
private RadioButton WmvRadioButton;
private GroupBox groupBox1;
private Label label1;
private Container components = null;
// The main com object
private static FilterGraph fg = null;
// The graphbuilder interface ref
private static IGraphBuilder gb = null;
// The mediacontrol interface ref
private static IMediaControl mc = null;
// The mediaevent interface ref
private static IMediaEventEx me = null;
// DD For debugging
DsROTEntry rot = null;
// MPEG 1 stream splitter interface
private static IBaseFilter mp3_file_source = null;
private static IBaseFilter mpg_stream_splitter = null;
private static IBaseFilter dshow_audio_decoder = null;
private static IBaseFilter infinitePinTeeFilter = null;
private static IBaseFilter logitech_earphone_headset = null;
private static IBaseFilter logitech3_earphone_headset = null;
private static IBaseFilter sigmatel_speakers_headset = null;
// variable to store the filename and extension
private static string fName;
private static string fExt;
// one "global" hr
private static int hr;
public M2Mkv()
{
InitializeComponent();
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
this.button1 = new System.Windows.Forms.Button();
this.label1 = new System.Windows.Forms.Label();
this.MkvRadioButton = new System.Windows.Forms.RadioButton();
this.WmvRadioButton = new System.Windows.Forms.RadioButton();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.groupBox1.SuspendLayout();
this.SuspendLayout();
//
// button1
//
this.button1.Location = new System.Drawing.Point(16, 16);
this.button1.Name = "button1";
this.button1.TabIndex = 0;
this.button1.Text = "Convert";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// label1
//
this.label1.Location = new System.Drawing.Point(24, 120);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(80, 24);
this.label1.TabIndex = 1;
//
// MkvRadioButton
//
this.MkvRadioButton.Checked = true;
this.MkvRadioButton.Location = new System.Drawing.Point(8, 16);
this.MkvRadioButton.Name = "MkvRadioButton";
this.MkvRadioButton.TabIndex = 2;
this.MkvRadioButton.TabStop = true;
this.MkvRadioButton.Text = "Convert to mkv";
//
// WmvRadioButton
//
this.WmvRadioButton.Location = new System.Drawing.Point(8, 40);
this.WmvRadioButton.Name = "WmvRadioButton";
this.WmvRadioButton.TabIndex = 3;
this.WmvRadioButton.TabStop = true;
this.WmvRadioButton.Text = "Convert to wmv";
//
// groupBox1
//
this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
this.WmvRadioButton,
this.MkvRadioButton});
this.groupBox1.Location = new System.Drawing.Point(16, 40);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(128, 72);
this.groupBox1.TabIndex = 4;
this.groupBox1.TabStop = false;
//
// M2Mkv
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(232, 150);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.label1,
this.button1,
this.groupBox1});
this.MaximizeBox = false;
this.Name = "M2Mkv";
this.SizeGripStyle = System.Windows.Forms.SizeGripStyle.Hide;
this.Text = "m2mkv";
this.groupBox1.ResumeLayout(false);
this.ResumeLayout(false);
}
#endregion
[STAThread]
static void Main()
{
Application.Run(new M2Mkv());
}
//
// method to ask the user the filename
//
private void button1_Click(object sender, System.EventArgs e)
{
OpenFileDialog ofd = new OpenFileDialog();
if( ofd.ShowDialog() == DialogResult.OK )
{
FileInfo fi = new FileInfo( ofd.FileName );
fExt = fi.Extension;
fName = fi.FullName.Substring( 0, fi.FullName.Length - fExt.Length );
CloseInterfaces();
InitInterfaces();
if (MkvRadioButton.Checked)
{
label1.Text = "processing";
button1.Enabled = false;
StopMp3();
PlayMp3();
}
}
}
// Play the music
public void PlayMp3()
{
Convert2Wav();
}
// Stop the music
public void StopMp3()
{
if (mc != null)
{
mc.Stop();
mc = null;
}
}
//
// This method creates the filter graph
//
void InitInterfaces()
{
try
{
//fg = new FilterGraph();
//gb = (IGraphBuilder)fg;
//mc = (IMediaControl)fg;
//me = (IMediaEventEx)fg;
gb = (IGraphBuilder)new FilterGraph();
//gb = (IGraphBuilder)fg;
// mc = (IMediaControl)gb;
// me = (IMediaEventEx)gb;
}
catch(Exception)
{
MessageBox.Show( "Couldn't start" );
}
}
//
//This method stops the filter graph and ensures that we stop
//sending messages to our window
//
void CloseInterfaces()
{
// Clean it up
if( me != null )
{
hr = mc.Stop();
DsError.ThrowExceptionForHR( hr );
hr = me.SetNotifyWindow( IntPtr.Zero , WM_GRAPHNOTIFY, IntPtr.Zero );
DsError.ThrowExceptionForHR( hr );
}
// DD For debugging
if (rot != null)
{
rot.Dispose();
rot = null;
}
if (mp3_file_source != null)
Marshal.ReleaseComObject(mp3_file_source);
mp3_file_source = null;
if (mpg_stream_splitter != null)
Marshal.ReleaseComObject(mpg_stream_splitter);
mpg_stream_splitter = null;
if (dshow_audio_decoder != null)
Marshal.ReleaseComObject(dshow_audio_decoder);
dshow_audio_decoder = null;
if (infinitePinTeeFilter != null)
Marshal.ReleaseComObject(infinitePinTeeFilter);
infinitePinTeeFilter = null;
if (logitech_earphone_headset != null)
Marshal.ReleaseComObject(logitech_earphone_headset);
logitech_earphone_headset = null;
if (logitech3_earphone_headset != null)
Marshal.ReleaseComObject(logitech3_earphone_headset);
logitech3_earphone_headset = null;
if (sigmatel_speakers_headset != null)
Marshal.ReleaseComObject(sigmatel_speakers_headset);
sigmatel_speakers_headset = null;
if (mc != null)
Marshal.ReleaseComObject(mc);
mc = null;
if (me != null)
Marshal.ReleaseComObject(me);
me = null;
if (gb != null)
Marshal.ReleaseComObject(gb);
gb = null;
if( fg != null )
Marshal.ReleaseComObject( fg );
fg = null;
}
//
// This method converts the input file to a wav file
//
void Convert2Wav()
{
IPin mp3_file_sourceOut = null;
IPin mpg_stream_splitterIn = null, mpg_stream_splitterOut = null;
IPin dshow_audio_decoderIn = null, dshow_audio_decoderOut = null;
IPin infinitePinTeeFilterIn = null, infinitePinTeeFilterOut1 = null;
IPin infinitePinTeeFilterOut2 = null, infinitePinTeeFilterOut3 = null;
// Output Devices
IPin logitech_earphone_headsetIn = null;
IPin logitech3_earphone_headsetIn = null;
IPin sigmatel_speakers_headsetIn = null;
try
{
string fileName = fName;
Guid filter_graph_guid = new Guid("E436EBB8-524F-11CE-9F53-0020AF0BA770");
Type t = Type.GetTypeFromCLSID(filter_graph_guid);
gb = (IGraphBuilder)Activator.CreateInstance(t);
Guid file_source_guid = new Guid("E436EBB5-524F-11CE-9F53-0020AF0BA770");
Type file_source_type = Type.GetTypeFromCLSID(file_source_guid);
mp3_file_source = (IBaseFilter)Activator.CreateInstance(file_source_type);
hr = gb.AddFilter((IBaseFilter)mp3_file_source, fileName);
mp3_file_source.FindPin("Output", out mp3_file_sourceOut);
DsError.ThrowExceptionForHR(hr);
Guid splitter_guid = new Guid("336475D0-942A-11CE-A870-00AA002FEAB5");
Type splitter_type = Type.GetTypeFromCLSID(splitter_guid);
mpg_stream_splitter = (IBaseFilter)Activator.CreateInstance(splitter_type);
hr = gb.AddFilter((IBaseFilter)mpg_stream_splitter, "MPEG 1 Stream Splitter");
mpg_stream_splitter.FindPin("Input", out mpg_stream_splitterIn);
mpg_stream_splitter.FindPin("Audio", out mpg_stream_splitterOut);
DsError.ThrowExceptionForHR( hr );
// Connect the file source to the stream splitter
gb.Connect(mp3_file_sourceOut, mpg_stream_splitterIn);
Guid decoder_guid = new Guid("0F40E1E5-4F79-4988-B1A9-CC98794E6B55");
Type decoder_type = Type.GetTypeFromCLSID(decoder_guid);
dshow_audio_decoder = (IBaseFilter)Activator.CreateInstance(decoder_type);
hr = gb.AddFilter((IBaseFilter)dshow_audio_decoder, "ffdshow Audio Decoder 0001");
dshow_audio_decoder.FindPin("In", out dshow_audio_decoderIn);
dshow_audio_decoder.FindPin("Out", out dshow_audio_decoderOut);
DsError.ThrowExceptionForHR(hr);
// Connect the stream splitter to the audio decoder
gb.Connect(mpg_stream_splitterOut, dshow_audio_decoderIn);
Guid tee_filter_guid = new Guid("F8388A40-D5BB-11D0-BE5A-0080C706568E");
Type tee_filter_type = Type.GetTypeFromCLSID(tee_filter_guid);
infinitePinTeeFilter = (IBaseFilter)Activator.CreateInstance(tee_filter_type);
hr = gb.AddFilter((IBaseFilter)infinitePinTeeFilter, "Infinite Pin Tee Filter");
infinitePinTeeFilter.FindPin("Input", out infinitePinTeeFilterIn);
infinitePinTeeFilter.FindPin("Output1", out infinitePinTeeFilterOut1);
infinitePinTeeFilter.FindPin("Output2", out infinitePinTeeFilterOut2);
infinitePinTeeFilter.FindPin("Output3", out infinitePinTeeFilterOut3);
DsError.ThrowExceptionForHR(hr);
// Connect the audio decoder to the infinite pin tee
gb.Connect(dshow_audio_decoderOut, infinitePinTeeFilterIn);
Guid logitech_earphone_guid = new Guid("E30629D1-27E5-11CE-875D-00608CB78066");
Type earphone_type = Type.GetTypeFromCLSID(logitech_earphone_guid);
logitech_earphone_headset = (IBaseFilter)Activator.CreateInstance(earphone_type);
hr = gb.AddFilter((IBaseFilter)logitech_earphone_headset, "Headset Earphone (Logitech USB Headset)");
logitech_earphone_headset.FindPin("Audio Input pin (rendered)", out logitech_earphone_headsetIn);
DsError.ThrowExceptionForHR(hr);
// Connect the infinite pin tee to first headphone through Output1
gb.Connect(infinitePinTeeFilterOut1, logitech_earphone_headsetIn);
Guid logitech3_earphone_guid = new Guid("E30629D1-27E5-11CE-875D-00608CB78066");
Type logitech3_earphone_type = Type.GetTypeFromCLSID(logitech3_earphone_guid);
logitech3_earphone_headset = (IBaseFilter)Activator.CreateInstance(logitech3_earphone_type);
hr = gb.AddFilter((IBaseFilter)logitech3_earphone_headset, "Headset Earphone (3- Logitech USB Headset)");
logitech3_earphone_headset.FindPin("Audio Input pin (rendered)", out logitech3_earphone_headsetIn);
DsError.ThrowExceptionForHR(hr);
// Connect the infinite pin tee to second headphone through Output2
gb.Connect(infinitePinTeeFilterOut2, logitech3_earphone_headsetIn);
Guid sigmatel_speakers_guid = new Guid("E30629D1-27E5-11CE-875D-00608CB78066");
Type sigmatel_speakers_type = Type.GetTypeFromCLSID(sigmatel_speakers_guid);
sigmatel_speakers_headset = (IBaseFilter)Activator.CreateInstance(sigmatel_speakers_type);
hr = gb.AddFilter((IBaseFilter)sigmatel_speakers_headset, "Speakers (Sigma Tel High Definition Audio CODEC)");
sigmatel_speakers_headset.FindPin("Audio Input pin (rendered)", out sigmatel_speakers_headsetIn);
DsError.ThrowExceptionForHR(hr);
// Connect the infinite pin tee to sigmatel speakers through Output3
gb.Connect(infinitePinTeeFilterOut3, sigmatel_speakers_headsetIn);
// use Intelligent connect to build the rest of the graph
hr = gb.RenderFile( fileName + fExt, null );
DsError.ThrowExceptionForHR( hr );
mc = (IMediaControl)gb;
me = (IMediaEventEx)gb;
hr = me.SetNotifyWindow(this.Handle, WM_GRAPHNOTIFY, IntPtr.Zero);
DsError.ThrowExceptionForHR( hr );
// DD For debugging, adds the graph to the ROT table
rot = new DsROTEntry(gb);
// we are ready to convert
hr = mc.Run();
DsError.ThrowExceptionForHR( hr );
}
catch( Exception ex )
{
MessageBox.Show( "Error converting to mvk: " + ex.Message );
}
}
int WM_GRAPHNOTIFY = 0x00008001;
protected override void WndProc( ref Message m )
{
if( m.Msg == WM_GRAPHNOTIFY )
{
IntPtr p1 = Marshal.AllocCoTaskMem(4);
IntPtr p2 = Marshal.AllocCoTaskMem(4);
EventCode code;
if (me == null)
return;
while (me.GetEvent(out code, out p1, out p2, 0) == 0)
{
if( code == EventCode.Complete )
{
label1.Text = "done";
button1.Enabled = true;
mc.Stop();
}
me.FreeEventParams( code, p1, p2 );
Marshal.FreeCoTaskMem(p1);
Marshal.FreeCoTaskMem(p2);
}
return;
}
base.WndProc( ref m );
}
}
GrizMan
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Try the following. I marked the changes I made with "jl - " so you can what was causing the problems. Also, the reason you're not able to connect to the remote graph in GraphEdit is most likely because you have the wrong version for Vista. I explain why this is, in the article http://www.codeproject.com/cs/media/dsgraphedit.asp [^] in the section "Known Issues". Hope this helps.
void Convert2Wav()
{
IPin mp3_file_sourceOut = null;
IPin mpg_stream_splitterIn = null, mpg_stream_splitterOut = null;
IPin dshow_audio_decoderIn = null, dshow_audio_decoderOut = null;
IPin infinitePinTeeFilterIn = null, infinitePinTeeFilterOut1 = null;
IPin infinitePinTeeFilterOut2 = null, infinitePinTeeFilterOut3 = null;
IPin logitech_earphone_headsetIn = null;
IPin logitech3_earphone_headsetIn = null;
IPin sigmatel_speakers_headsetIn = null;
try
{
string fileName = fName;
hr = gb.AddSourceFilter(fName + fExt, fName, out mp3_file_source);
DsError.ThrowExceptionForHR(hr);
mp3_file_source.FindPin("Output", out mp3_file_sourceOut);
Guid splitter_guid = new Guid("336475D0-942A-11CE-A870-00AA002FEAB5");
Type splitter_type = Type.GetTypeFromCLSID(splitter_guid);
mpg_stream_splitter = (IBaseFilter)Activator.CreateInstance(splitter_type);
hr = gb.AddFilter((IBaseFilter)mpg_stream_splitter, "MPEG 1 Stream Splitter");
mpg_stream_splitter.FindPin("Input", out mpg_stream_splitterIn);
DsError.ThrowExceptionForHR(hr);
gb.Connect(mp3_file_sourceOut, mpg_stream_splitterIn);
mpg_stream_splitter.FindPin("Audio", out mpg_stream_splitterOut);
Guid decoder_guid = new Guid("0F40E1E5-4F79-4988-B1A9-CC98794E6B55");
Type decoder_type = Type.GetTypeFromCLSID(decoder_guid);
dshow_audio_decoder = (IBaseFilter)Activator.CreateInstance(decoder_type);
hr = gb.AddFilter((IBaseFilter)dshow_audio_decoder, "ffdshow Audio Decoder 0001");
dshow_audio_decoder.FindPin("In", out dshow_audio_decoderIn);
dshow_audio_decoder.FindPin("Out", out dshow_audio_decoderOut);
DsError.ThrowExceptionForHR(hr);
gb.Connect(mpg_stream_splitterOut, dshow_audio_decoderIn);
Guid tee_filter_guid = new Guid("F8388A40-D5BB-11D0-BE5A-0080C706568E");
Type tee_filter_type = Type.GetTypeFromCLSID(tee_filter_guid);
infinitePinTeeFilter = (IBaseFilter)Activator.CreateInstance(tee_filter_type);
hr = gb.AddFilter((IBaseFilter)infinitePinTeeFilter, "Infinite Pin Tee Filter");
infinitePinTeeFilter.FindPin("Input", out infinitePinTeeFilterIn);
infinitePinTeeFilter.FindPin("Output1", out infinitePinTeeFilterOut1);
DsError.ThrowExceptionForHR(hr);
gb.Connect(dshow_audio_decoderOut, infinitePinTeeFilterIn);
Guid logitech_earphone_guid = new Guid("E30629D1-27E5-11CE-875D-00608CB78066");
Type earphone_type = Type.GetTypeFromCLSID(logitech_earphone_guid);
logitech_earphone_headset = (IBaseFilter)Activator.CreateInstance(earphone_type);
hr = gb.AddFilter((IBaseFilter)logitech_earphone_headset, "Headset Earphone (Logitech USB Headset)");
logitech_earphone_headset.FindPin("Audio Input pin (rendered)", out logitech_earphone_headsetIn);
DsError.ThrowExceptionForHR(hr);
gb.Connect(infinitePinTeeFilterOut1, logitech_earphone_headsetIn);
infinitePinTeeFilter.FindPin("Output2", out infinitePinTeeFilterOut2);
Guid logitech3_earphone_guid = new Guid("E30629D1-27E5-11CE-875D-00608CB78066");
Type logitech3_earphone_type = Type.GetTypeFromCLSID(logitech3_earphone_guid);
logitech3_earphone_headset = (IBaseFilter)Activator.CreateInstance(logitech3_earphone_type);
hr = gb.AddFilter((IBaseFilter)logitech3_earphone_headset, "Headset Earphone (3- Logitech USB Headset)");
logitech3_earphone_headset.FindPin("Audio Input pin (rendered)", out logitech3_earphone_headsetIn);
DsError.ThrowExceptionForHR(hr);
gb.Connect(infinitePinTeeFilterOut2, logitech3_earphone_headsetIn);
infinitePinTeeFilter.FindPin("Output3", out infinitePinTeeFilterOut3);
Guid sigmatel_speakers_guid = new Guid("E30629D1-27E5-11CE-875D-00608CB78066");
Type sigmatel_speakers_type = Type.GetTypeFromCLSID(sigmatel_speakers_guid);
sigmatel_speakers_headset = (IBaseFilter)Activator.CreateInstance(sigmatel_speakers_type);
hr = gb.AddFilter((IBaseFilter)sigmatel_speakers_headset, "Speakers (Sigma Tel High Definition Audio CODEC)");
sigmatel_speakers_headset.FindPin("Audio Input pin (rendered)", out sigmatel_speakers_headsetIn);
DsError.ThrowExceptionForHR(hr);
gb.Connect(infinitePinTeeFilterOut3, sigmatel_speakers_headsetIn);
mc = (IMediaControl)gb;
me = (IMediaEventEx)gb;
hr = me.SetNotifyWindow(this.Handle, WM_GRAPHNOTIFY, IntPtr.Zero);
DsError.ThrowExceptionForHR(hr);
rot = new DsROTEntry(gb);
hr = mc.Run();
DsError.ThrowExceptionForHR(hr);
}
catch (Exception ex)
{
MessageBox.Show("Error converting to mvk: " + ex.Message);
}
}
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In the following code snippet myMath class has five Attributes, the problem which I am facing is that on the console I don't get the Order of the Attributes , right. The attribute with bugID = 1 shows on the top, and strangely it is followed by the fifth attribute bugID = 5, and then 2,3,4.
When I remove the fifth Attribute this is the order of the Attributes 2,1,3,4.
When there are three attributes the behavior is normal as in 1,2,3.
When there are two attributes again the behavior changes to 2,1.
Can Anyone pl. figure out the problem for me
using System.Collections.Generic;
using System;
using System.Linq;
using System.Text;
using System.Reflection;
namespace UsingAttributes
{
[AttributeUsage(AttributeTargets.All,AllowMultiple = true )]
class BugFixAttribute : Attribute
{
private int bugID;
private string coder;
private string date;
private string comment;
public BugFixAttribute(int bugID, string coder, string date)
{
this.bugID = bugID;
this.coder = coder;
this.date = date;
}
public string Comment
{
get
{
return comment;
}
set
{
comment = value;
}
}
public int BugID
{
get
{
return bugID;
}
}
public string Coder
{
get
{
return coder;
}
}
public string Date
{
get
{
return date;
}
}
}
[BugFix(001, "sh", "08/11/2007", Comment = "one")]
[BugFix(002, "sh", "08/11/2007", Comment = "two")]
[BugFix(003, "sh", "08/11/2007", Comment = "three")]
[BugFix(004, "sh", "08/11/2007", Comment = "four")]
[BugFix(005, "sh", "08/11/2007", Comment = "five")]
public class myMath
{
public double DoFunc1(double param1)
{
return param1 + DoFunc2(param1);
}
public double DoFunc2(double param1)
{
return param1 / 3;
}
}
class Program
{
static void Main(string[] args)
{
myMath mm = new myMath();
Console.WriteLine("Result for DoFunc(7) = {0}", mm.DoFunc1(7));
MemberInfo inf = typeof(myMath);
object[] attributes = inf.GetCustomAttributes(typeof(BugFixAttribute), false);
foreach (object attribute in attributes)
{
BugFixAttribute b = attribute as BugFixAttribute;
Console.WriteLine("\nBugID: {0}", b.BugID);
Console.WriteLine("Programmer: {0}", b.Coder);
Console.WriteLine("Date : {0}", b.Date);
Console.WriteLine("Comment: {0}", b.Comment);
}
Console.ReadKey();
}
}
}
Thanx
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AFAIK the call to GetCustomAttributes does not do so in any recognisable order. I have faced a similar issue in the past where the order of arributes was important so I created a custom static method to get my attributes in an ordered fashion.
In your case this could well use the BugID property to order on.
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