Re: Capturing every minimize and restore - C# Discussion Boards

Spacix One4-Sep-07 6:37

Spacix One

4-Sep-07 6:37

I'm working on an application where I need to capture minimize and restore (all of them) and I ran into a problem with my current method...

At the moment I have an override in winproc to look for "size_minimize" and then it'll prompt me. I also look for the system command "SC_RESTORE" to reset it, but I have an issue, if you open the application minimize and then use tasksmanager's "switch to" it doesn't send the "SC_RESTORE" and this will cause a horrible problem! The app will stop working till they minimize and restore it normally...

I HAVE to shutdown my background workers when the app is minimized, and restore them when the user restores the app...

Here is my current winproc

protected override void WndProc(ref System.Windows.Forms.Message m)
{
    bool bwincmd = false;
    switch (m.Msg)
    {
        case 0x112: //WM_SYSCOMMAND
            switch (m.WParam.ToInt32() & 0xFFF0)
            {
                //redundant but prevents Maximize command (CreateParams has it grayed out)
                case 0xF030: //SC_MAXIMIZE
                    bwincmd = true; //allow do nothing else
                    break;
                case 0xF010: //SC_MOVE
                    setprogramedmove(); //move and click the mouse to move the application
                    bwincmd = true; //allow do nothing
                    break;
                case 0xF120: //SC_RESTORE (this is the only way to restore? doesn't look like it)
                    bMinimized = false; //flag workers to start again
                    break;
            }
            break;
        case 0x0005: //WM_SIZE
            switch (m.WParam.ToInt32())
            {
                case 0x1: //SIZE_MINIMIZED
                    if (this.OnMinimize != null)
                    {
                        //call captured minimize event
                        this.OnMinimize(this, EventArgs.Empty);
                    }
                    break;
            }
            break;
    }
    if (bwincmd)
    {
        //do nothing and stop real WndProc from seeing message.
        return;
    }
    else
    {
        // send control to base message handler (real WndProc)
        base.WndProc(ref m);
    }
}

I have no idea how taskmanager is restoring the app without sending SC_RESTORE

-Spacix
All your skynet questions[^] belong to solved

Re: Capturing every minimize and restore

Giorgi Dalakishvili4-Sep-07 7:25

Giorgi Dalakishvili

4-Sep-07 7:25

You can set up event handler for form's resize event and check for the window state there.

Also, have a look at http://www.codeproject.com/csharp/windowstatemonitor.asp
I don't know if it solves the problem with task manager but I hope you find it useful

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Re: Capturing every minimize and restore [modified]

Spacix One4-Sep-07 7:48

Spacix One

4-Sep-07 7:48

Ahh crap, it has the same exact issue... Thanks for the input though

The hook methood used is seems like more overhead...
I guess it is easier people who havn't written in Win32 C; IE those who don't handle winproc their self and just want the events to fire.

Even like my application if thie 'bug' occurs and you unfocus the form (goto another window) then click back on the taskbar(or Alt-Tab as both send SC_RESTORE) the state is restored because the command is sent (cool!) but now I need to figure out what command is being sent from taskmanager...
Taskmanager is a weird application! maybe because it loads KM independent from the shell? This looks like a job for Microsoft Wink | ;)

(I'll get back to everyone in 5 to 6 months Laugh | :laugh:

)

Just so you know I am capturing the resize event as you said, look at my code I posted the winproc has a case "0x0005" aka WM_SIZE where I trigger my minimize event...

-Spacix
All your skynet questions[^] belong to solved
-- modified at 14:47 Tuesday 4th September, 2007

Re: Capturing every minimize and restore

Skippums4-Sep-07 12:05

Skippums

4-Sep-07 12:05

You could also use the tool "Spy++" that comes with visual studio .net to watch what messages are passed between windows and your app.

Re: Capturing every minimize and restore

Spacix One4-Sep-07 14:19

Spacix One

4-Sep-07 14:19

Yea I did that, which is how I knew it doesn't send SC_RESTORE (other than it doesn't work, but was my reason "why" it didn't work...)

Here is my screen cap from gVIM of the commands:
http://img72.imageshack.us/my.php?image=commandsvimzs0.gif

for some reason imageshack added transparency to my image (so it looks funny on their background...)

-Spacix
All your skynet questions[^] belong to solved

Re: Capturing every minimize and restore

Spacix One6-Sep-07 5:14

Spacix One

6-Sep-07 5:14

Giorgi Dalakishvili wrote:
You can set up event handler for form's resize event and check for the window state there.

nobugz from the MSDN forums pointed this out and it doesn't have the same issue; I think this must have been what this post was pointing out and I just missed it after looking at the link on the bottom...

nobugz wrote:

Use the Resize event. For example:

public partial class Form1 : Form {
    private FormWindowState mState;
    public Form1() {
      InitializeComponent();
      this.Resize += Form1_Resize;
      mState = this.WindowState;
    }
    private void Form1_Resize(object sender, EventArgs e) {
      if (mState != this.WindowState) {
        mState = this.WindowState;
        switch (mState) {
          case FormWindowState.Normal: Console.WriteLine("Restored"); break;
          case FormWindowState.Maximized: Console.WriteLine("Maximized"); break;
          case FormWindowState.Minimized: Console.WriteLine("Minimized"); break;
        }
      }
    }
  }

-Spacix
All your skynet questions[^] belong to solved

Re: Capturing every minimize and restore

Giorgi Dalakishvili6-Sep-07 5:36

Giorgi Dalakishvili

6-Sep-07 5:36

Yes, this is what I meant Smile | :)

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Re: Capturing every minimize and restore

Spacix One6-Sep-07 6:52

Spacix One

6-Sep-07 6:52

There is a bug with this though, pointed out by Peter Ritchie after that was posted, if the form is at point (0,0) and it is maximized then the resize event doesn't trigger, but since I don't care/even have the ability for a user to maximize my form not a problem with me. The main form in my application is a static sized "panel" or "meter" which doesn't need to be resized.

-Spacix
All your skynet questions[^] belong to solved

Failed to import C++ COM DLL in to C# in .NET 2005

Jack Rong4-Sep-07 5:48

Jack Rong

4-Sep-07 5:48

It works fine in previous version until we decide to use .NET 2005. The C# project failed to add reference of COM Dll in C++ with the error message:

A reference to "../whatevername.dll" could not be added. Please make sure that the file is accessible, that it is a valid assembly or COM component".

Please help.

Jack Rong

Passing IP from client across servers

Gump6194-Sep-07 5:38

Gump619

4-Sep-07 5:38

Hello. I'm building a web portal that interfaces with another server via XML. Clients of the big server will be using this portal instead of an HTML interface already existing. The problem is the server keeps track of client IP addresses for security and since everyone will be going through a portal, the server will always think they are coming from one IP address (portal server). Is there a way in C# to change the server IP address when sending the request or response to the other server? The remote server needs the original client IP basically. Thanks for any feedback you have.

how to get a list of all avilable controls in a namespace

Amar Chaudhary4-Sep-07 5:21

Amar Chaudhary

4-Sep-07 5:21

I am working on a Project i am now a bit stuck as i want to show a list of controls from a namespace and display the selected control;
as visual studio does, as soon as we add reference to the library(dll) the controls are shown in tool box .
at first I am trying to get all controls from System.Windows.Forms

Any hint or link will be helpful

Thanks And regards
Amar Chaudhary

It is Good to be Important but!
it is more Important to be Good

Re: how to get a list of all avilable controls in a namespace

led mike4-Sep-07 5:39

led mike

4-Sep-07 5:39

Perhaps using Reflection

Re: how to get a list of all avilable controls in a namespace

Amar Chaudhary4-Sep-07 6:55

Amar Chaudhary

4-Sep-07 6:55

Thanks for the direction

I am getting Lot of types in MScoreLib.dll
but there is no "System.Windows.Forms"

code I used is
using System.Reflection;

on form load event

 Assembly a = Assembly.Load("MScorlib.dll");
 Type[] types = a.GetTypes();
 foreach (Type t in types)
 {
     //if (t.IsClass)
     listBox1.Items.Add(t.ToString());
 }
 MessageBox.Show(listBox1.Items.Count.ToString());
// MessageBox.Show(types.Length.ToString());

do you have any idea about this
Thanks And Regards
Amar Chaudhary

It is Good to be Important but!
it is more Important to be Good

Re: how to get a list of all avilable controls in a namespace

Amar Chaudhary4-Sep-07 7:00

Amar Chaudhary

4-Sep-07 7:00

Amar Chaudhary wrote:
Assembly a = Assembly.Load("MScorlib.dll");

When i pass System.windows.forms.dll instead of MScorlib.dll
it throws a file not found exception

It is Good to be Important but!
it is more Important to be Good

Re: how to get a list of all avilable controls in a namespace

Giorgi Dalakishvili4-Sep-07 7:18

Giorgi Dalakishvili

4-Sep-07 7:18

Amar Chaudhary wrote:
When i pass System.windows.forms.dll instead of MScorlib.dll
it throws a file not found exception

It is located at %SystemRoot%\Microsoft.net\Framework\v2.0.50727\System.Windows.Forms.dll

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Re: how to get a list of all avilable controls in a namespace

led mike4-Sep-07 7:28

led mike

4-Sep-07 7:28

Amar Chaudhary wrote:
When i pass System.windows.forms.dll instead of MScorlib.dll
it throws a file not found exception

GAC assemblies require more than just the DLL file name, like version, maybe culture. Try doing some research on MSDN to get the details.

Re: how to get a list of all avilable controls in a namespace

Amar Chaudhary4-Sep-07 19:44

Amar Chaudhary

4-Sep-07 19:44

Assembly a = Assembly.LoadWithPartialName("System.Windows.Forms");
Type[] types = a.GetTypes();
foreach (Type t in types)
{

    listBox1.Items.Add(t.ToString());
}
MessageBox.Show(listBox1.Items.Count.ToString());

this is giving result but with warning

Warning	1	'System.Reflection.Assembly.LoadWithPartialName(string)' is obsolete: 'This method has been deprecated. Please use Assembly.Load() instead. http://go.microsoft.com/fwlink/?linkid=14202'	E:\important\Articles for code project\Theme Applier for windows forms\EasyUI\UIApplier\UIMaker\ControlBrowser.cs	31	26	UIMaker

I am looking more into it Thanks for your help

It is Good to be Important but!
it is more Important to be Good

RegEx help for a RegEx Newb

flipdoubt4-Sep-07 5:04

flipdoubt

4-Sep-07 5:04

Can someone help me write a regular expression that will return a string from the beginning of the input string up until a certain string is reached? I know how to do this without regular expressions, but I want to use a regular expression so users can modify the format later.

Also, can someone recommend a good tutorial for using regular expressions to accomplish this kind of task using .NET?

Thanks.

Re: RegEx help for a RegEx Newb

Christian Graus4-Sep-07 5:11

Christian Graus

4-Sep-07 5:11

www.expresso.com, or search for Expresso on this site. It's a program that helps you build and test regex. Also, the regex book from O'Reiley is pretty awesome.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: RegEx help for a RegEx Newb

flipdoubt4-Sep-07 5:14

flipdoubt

4-Sep-07 5:14

But there is RegEx in general and then there is .NET's flavor of RegEx. Are you recommending the O'Reilly book for .NET?

Re: RegEx help for a RegEx Newb

Christian Graus4-Sep-07 6:04

Christian Graus

4-Sep-07 6:04

The O'Reilly book covers the different flavours in depth.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: RegEx help for a RegEx Newb

Joseph Guadagno4-Sep-07 5:14

Joseph Guadagno

4-Sep-07 5:14

I use http://regexlib.com/CheatSheet.aspx for Regular Expressions. There is also a "free" application to test .NET Regular Expressions http://www.sellsbrothers.com/tools/default.aspx#regexd.

Here are some of my articles.
Hope this helps!
Joseph Guadagno
http://www.josephguadagno.net

Re: RegEx help for a RegEx Newb

DavidNohejl4-Sep-07 6:03

DavidNohejl

4-Sep-07 6:03

+1 for http://regexlib.com[^]

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Re: RegEx help for a RegEx Newb

ed^nrgc4-Sep-07 5:38

ed^nrgc

4-Sep-07 5:38

If I understand you correctly, it would be a simple case of creating a regex string of something like "^(?<mymatch>.*)"+ sMyTerminatorString. Then check the matches for mymatch (or whatever you name it).

Re: RegEx help for a RegEx Newb

Skippums4-Sep-07 12:12

Skippums

4-Sep-07 12:12

Look into RegexOptions.MultiLine to change whether "." matches newlines as well...

myRegex = new Regex("^.*?(?=myStringThatDelimitsTheEndOfTheMatch)");

Match m = myRegex.Match(sampleString);

if (m.Success) {
m.Value; // this returns only the part of the match
// that occured prior to your delimiting string
}

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