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Hello everyone,
I'm making a program, but I'm (obviously) stuck with a problem.
I want to write a message to the current topscreen through a C# application.
For instance: when you open Microsoft Word and you type 'hello' it will double the word like this 'hheelllloo'.
The application allready knows when a key is pushed, now the only thing that will have to be done is write a message to the current top window (like word or notepad or whatever window is open and where you are typing in).
I guess that this is possible with something like PostMessage and GetTopWindow. But it won't work. Can anybody tell me what I'm doing wrong? Or can someone tell me what will work?
Thank you allready.
This is what I have:
[DllImport("user32.dll")]
public static extern int GetTopWindow(int hwnd);
[DllImport("user32.dll")]
public static extern int PostMessage(int hWnd, uint Msg, int wParam, uint lParam);
const int VK_KEY = 0x41;
const int WM_CHAR = 0x0102;
int WindowToFind = GetTopWindow(0);
Console.WriteLine(WindowToFind);
int result = PostMessage(WindowToFind, WM_CHAR, VK_KEY, 0);
Console.WriteLine(result);
The output for result is always 1.
The output for WindowToFind is different, sometimes it gives the same value at different windows. Sometimes a different value. One of the outcome of WindowToFind is 131138
edit:
Allright... finaly I found out the anwser to my problem (after hours of searching :P).
I just had to use the SendKeys class.
SendKeys.SendWait("<value>");
</value>
modified on Wednesday, March 5, 2008 5:42 AM
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maybe GetDlgItem and GetWindowText or SetWindowText can help ?
just an idea.
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Hi,
Am trying to implement a progress bar in an application to copy files/folders. This progress bar is meant to sho the staus of copy.
Can anyone clarify:
1. What's the appropriate method for this to implement an actual status update using progress bar?
2. Whenever I put those two threads running (Main thread and progress bar) it seems the main thread is hanged until files are copied and the progress bar is updated once the copy process is over.
I came to know that, this can be sorted out in .NET2.0 using BackgroundWorker class but what can I do for this in .NET 1.1?
Regards,
Panicker.
modified on Wednesday, March 5, 2008 5:13 AM
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SPanicker* wrote: 1. What's the appropriate method for this to implement an actual status update using progress bar?
Run the file copying in a separate thread. This will make your GUI responsive. When the file copy progresses, you need to update progress bar value. Check this[^] to learn how you can update your controls from a separate thread.
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Thanks navaneeth.
Regards,
Lenus.
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Hi all, I'm currently drawing a label on the top of my controls (combos, datetimepickers and so on) to simulate a readonly state. What I want to ask is if there is a way to know wich exactly is the 'client area' of the control (that is, without the right button and the borders) either with a ClientRectangle like method (since it seems that the provided one returns the whole size) or by checking if available somewhere the sizes of the single elements (width of the border, size of the button and so on)... Someone can help me?
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hi,
I want to add contacts in active directory.I'm able to do so.
But the problem is that they r not reflected in Address book of Microsoft outlook.
When i investigated why this is so, i found it was because of some policy.
after discussing with support guys about what they do to manually add contacts, they suggested me to use MS exchange console instead to add the contact so that it will get reflected in few minutes into address book after adding.So how do i add a contact thru this exchange server console?
I tried to search on the net but i didn't find any help.May be any of u people could help me out.
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I need to check status of serial port that using by some application
interface with some hardware.
Becuase I need to monitor satus of this comport by create my applition by using C#.
I want to check status of that serail port about "Now still tranfer data"
or "Stop to transfer data".
Because the application that opened this port can't tell me status of it
so I need to know status of this application by check serial port.
So colud please advise me about code on C# platform
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Hi,
AFAIK you can't tell anything about a serial port unless you (try and) open it.
Which means, if some application has opened the port in order to use it, you can't open it
in a monitoring app since the port is "in use" or "allocated", and you can't get any
information whatsoever.
Of course, if the one app closes the serial port as soon as it is done receiving/transmitting,
then the monitoring app could try an open, and report success/failure. Mind you, if it tries
periodically, it may cause the main app to fail when that wants to use the port!
Also I am afraid the above is how serial ports work on Windows, no matter what language
and framework you intend to use.
Luc Pattyn [Forum Guidelines] [My Articles]
This month's tips:
- before you ask a question here, search CodeProject, then Google;
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get;
- use PRE tags to preserve formatting when showing multi-line code snippets.
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There is an activex.exe which is written in vc++ and now i have to call some method of it through C# class library to use in asp.net 2.0
This method accepts some variant type parameters in actual and after taking reference in c#, it's show's to pass parameters as an objects with ref and also returning an object. but everytime i call this function it gives an error -i am using reflection, InvokeMember - : the exception are : Exception has been thrown by the target of an invocation and The server threw an exception. (Exception from HRESULT: 0x80010105 (RPC_E_SERVERFAULT)) , i am not able to figure it out what's wrong with it while i am able to call the all those functions which does not required any parameters successfully .
Stack Trace:
COMException (0x80010105): The server threw an exception. (Exception from HRESULT: 0x80010105 (RPC_E_SERVERFAULT))]
[TargetInvocationException: Exception has been thrown by the target of an invocation.]
System.RuntimeType.InvokeDispMethod(String name, BindingFlags invokeAttr, Object target, Object[] args, Boolean[] byrefModifiers, Int32 culture, String[] namedParameters) +0
System.RuntimeType.InvokeMember(String name, BindingFlags bindingFlags, Binder binder, Object target, Object[] providedArgs, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParams) +2453568
System.Type.InvokeMember(String name, BindingFlags invokeAttr, Binder binder, Object target, Object[] args) +29
WebApplication1.CreateObj.mXML_Response(String xmlString) in F:\Parvesh\Projects\componenttest\WebApplication1\WebApplication1\CreateObj.aspx.cs:116
WebApplication1.CreateObj.Button1_Click(Object sender, EventArgs e) in F:\Parvesh\Projects\componenttest\WebApplication1\WebApplication1\CreateObj.aspx.cs:68
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +105
System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +107
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +7
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +11
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5102
I also made a object array through which i am passing my values like
object myobj = new object[5]
myobj[0] = "mystring";
myobj[1] = "";
........
and passing like in : new object[] {myobj[0], myobj[1]....}
Any Help?
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Hello everybody
My project is a C# project on VS2005.
My application communicate with external device through Serial Port.I'm using USB to RS converter whitch add another COM Port in my computer.When I connect with device through this COM Port(transmit and receive data) everythink is OK.When unplug the USB cable from PC COM Port is still open and I try to transmit data the program is generate exception(Access to the Port is denied).How can I detect when the COM Port is disappear?
Thanks in advance
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Reposting is considered rude - please don't do it, it was only 17 hours ago you asked the same question which I have just responded to.
(Maybe you should add no-reposting to the guidelines Chris?)
Here[^]
Dave
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It's a bit of an odd scenario since real serial ports don't tend to disappear, and it doesn't seem this possibility was taken into account when Microsoft wrote the SerialPort class: There's no event that indicates Com-port "disappearance" in it.
I guess your best option would be to start a separate thread that polls SerialPort.IsOpen every now and then: Most likely this will throw the error you got earlier when you disconnect the USB adapter, so you can catch that to see if the port's still there... Of course, you'll need to catch it at any other reference to SerialPort as well, that's just decent programming.
Alternatively, there might be a class somewhere in the .Net framework that monitors USB devices, don't have any experience with that. Could very well be a p/invoke kind of thing.
Standards are great! Everybody should have one!
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I Need Some Code For Detecting Seriao Port As COM post Of My System. But Every where written in .Net2.0 Serialport.Port name space is used but iam develope my project in .Net1.1 then plaese Help ME
Thanks
In Advance
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Hello All,
Actually i am new with C# and need to overload assignment operator(=) in C#,
when i am trying to overload assignment operator as follows
public static operator = (double a)
{
}
but it gives error as "overloadable unary operator expected"
plz sufggest me what i have to do?
thanks
Bankey
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Hi bankey,
"=" can't be overloaded in C#.
For your information other oerators like, . , ?:, ->, new, is, as, sizeof too can't be overloaded.
Regards,
Panicker.
P.S. Mark as answer if you feel the reply is appropriate.
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Hi,
you can implement implicit conversions though, so that may or may not solve your problem.
look for the implicit keyword.
Luc Pattyn [Forum Guidelines] [My Articles]
This month's tips:
- before you ask a question here, search CodeProject, then Google;
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get;
- use PRE tags to preserve formatting when showing multi-line code snippets.
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Hello Friends,
I have a problem with print and printpreview.
I an using this code to print but there is a problem
Bitmap memoryImage = new Bitmap(panel1.Width, panel1.Height);
panel1.DrawToBitmap(memoryImage, panel1.ClientRectangle);
printDocument1.Print();
that it print one barcode on one page and another barcode on another page. As i want that it will utilize whole page means i know that on page page there should be 5 barcodes so how can i achive this....
And how can i show Print Preview
Thanks
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Wrap the particular application up in a CCW. (Com Callable Wrapper).
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Could you please tell me a bit in detail? Which application you want me to wrap?
A guidance to some kind of example will be very nice. Thanks for a reply.
Regards,
Pavas
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Hi,
Is there any control in C# , In which we can load rtf wtih header and footer and do margin setting as well.
If you have any idea about this, then please inform me at
khaleek_ahmad@yahoo.com
Thanks in advance
Khaleek ahmad
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You can use richtextbox to load rtf files but I'm not sure whether you will be able to manipulate with margin settings. You could give it a try though. I guess you can achieve what you want using this article: Integrating Microsoft Word in your .NET applications[^]
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I am trying to write code for compiler using Codedom. I am unable to compile code which uses COM references. The code gives file not found exeception while adding COM reference to Compiler parameter object even if it is present in the output folder of the code to compile(No idea why).
The possible solution I can search of is to get the executable path for the code to compile because those dlls are present in the same folder(I may be wrong here).
How can I get the executable path of the code that will be compiled??
or
Am I going with wrong approach?? If yes, then how to solve this issue????
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