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Hi There.
I need some technical help regarding one of the article i.e., "SendKeys in C++".
http://www.codeproject.com/KB/cpp/sendkeys_cpp_Article.aspx
This article is one of the best articles I have ever came across. At this point of moment, Can anyone please tell me how can I read the text written on the active window?
I mean this application can write text on active window, Can you please help me out in reading the same text?
In case you need any further info, then please let me know.
Thanks and Regards.
Pankaj
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char *strBuffer;
int numCharsToRead;
HWND activeWnd;
activeWnd = GetActiveWindow();
numCharsToRead = GetWindowTextLength(activeWnd);
strBuffer = (char) malloc(numCharsToRead+1);
memset(strBuffer, 0, numCharsToRead+1);
GetWindowText(activeWnd, strBuffer, numCharsToRead);
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Yikes...
OK - generally, that will only take the caption if the target window is not an edit control. For a complex view (e.g. CFormView-based views), you will have to descend into the child controls to get at the text-based ones. Using Notepad as an example, you will likely only get Notepad's caption.
You should mention that the above code will not work correctly in a Unicode build and is not TCHAR safe. Also, you do not handle deallocation of the buffer. You can skip the memset(...) by using calloc(...), but this is not necessary because you allocate enough space for the terminating NUL to be put in.
Might want to use new instead because this is likely a C++ target. (When you get older, you appreciate consistency more and more...)
Peace!
-=- James Please rate this message - let me know if I helped or not!<hr></hr>If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
See DeleteFXPFiles
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Guilty as charged.
Don't know what on earth I was thinking.
Also, strBuffer = (char) malloc(numCharsToRead+1); isn't going to compile anywhere. strBuffer = (char*) malloc(numCharsToRead+1) would be more appropriate, though for reasons mentioned by James, this entire method is still really poor.
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You are right buddy.
I only get the Caption but not the actual text.
Just FYI, my view is a complex (e.g. CFormView-based views). Any pointers, I mean, How can I read data that is being displayed in the same?
A code snippet will be helpful.
Thanks.PanB
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Just an add-on, when I tried to write some text on this window by getting its handle, its actually setting its caption...
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Here's some non MFC code that will grab the window text from a window's children.
http://www.savefile.com/files/1782897[^]
It can look at it's own children or you can enter the (full) title-bar text of
a program and it will look at that app's child windows.
Hope it's more useful and less horrific than my last 'effort' 
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Hi there.
Even that article does not fulfilled my requirement.
But anyway buddy, Thanks a TON for your effort and time.
Regards
PanB
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If you can easily determine the type of a given view object, or if your app only has one view-based class, you can get a pointer to the active view and cast it to the actual type of the CFormView-based class.
Your class can expose either the text of its children or their HWNDs, either one can be used to get the text of the controls. You can even have it present a struct-type that contains all of the HWNDs, allowing you easy access to all of the controls.
Peace!
-=- James Please rate this message - let me know if I helped or not!<hr></hr>If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
See DeleteFXPFiles
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Thanks for your reply James.
Just an add-on info. I am trying to hook an existing application with this new piece of code. So, I do not know what type of view is it, but I am sure its not something that's being derived from CEdit.
As I said before, if I try to set any text in the control, its Caption gets filled with that text.
In case you need any further info., please let me know.
Thanks
PanB
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I created a Smart Device MFC SDI application in VS2005. I've got some files with names like this: MyApp.cpp, MyAppDoc.cpp, MyAppView.cpp, MainFrm.cpp. There are classes in these files. In MyApp.cpp there is a class called CMyAppApp. In MyAppView.cpp there is a class called CMyAppView. In MainFrm.cpp there is a class called CMainFrame. How do I call public methods in CMyAppView and CMainFrame from CMyAppApp? How do I get hold of instances of the classes so I can access the methods? I don't want to use "new" on CMainFrame. This would create a new form. I want to get hold of the handle to the existing form and view (CMainFrame and CMyAppView). I can't find any good pointers in afxwin.h.
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lagu2653 wrote: How do I get hold of instances of the classes so I can access the methods?
There are no instances of classes (objects) until you create them.
You can't access non-static methods of a class without an object.
lagu2653 wrote: I don't want to use "new" on CMainFrame. This would create a new form. I want to get hold of the handle to the existing form and view (CMainFrame and CMyAppView).
Where do these existing windows come from if you don't create them?
Mark
Mark Salsbery
Microsoft MVP - Visual C++
![Java | [Coffee]](https://codeproject.freetls.fastly.net/script/Forums/Images/coffee.gif)
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Oops, I misread your post
lagu2653 wrote: How do I get hold of instances of the classes so I can access the methods? I don't want to use "new" on CMainFrame. This would create a new form. I want to get hold of the handle
MFC has functions to to get at those instances like, AfxGetMainWnd() or something
Then the CFrameWnd[^] class has functions to get Views like GetActiveView()
led mike
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OOOPS, bits are flowing more slowly from Italy... 
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
[My articles]
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led mike wrote: Oops, I misread your post
 me too apparently!
Mark Salsbery
Microsoft MVP - Visual C++
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If I understand you correctly then you've already wizard-generated code creating such windows. You may to call AfxGetMainWnd to get a pointer to the frame window (possibly you need to cast it) and the call its GetActiveView (and, again, cast it).
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
[My articles]
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Recently I reinstalled visual c++ 2008 Express edition and ever since then, when I open a project, all the source files within the project no longer automatically restore themselves to their previous state. This question isn't very clear so lets pretend I had the files main.cpp, d3d.cpp, and d3d.h open when I last closed my project. When I open this project again, none of the source files will open with it. I have to manually open all the source files (which can be quite tedious for large projects). Previous to reinstalling, the files main.cpp, d3d.cpp, and d3d.h would all automatically restore themselves in this particular example.
I've searched through the options menu but couldn't find a setting for it 
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Nobody knows?
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Now I need to write a dll witch COM interface, so that the asp application can use it.
The COM object will have a window. Can asp application show the window created by the COM object?
The problem is:
My COM knowledge is only from the book <Inside COM>, almost no practical experience.
However I can write regular dll (common interface, not COM).
Is there any quick guide for implementing such a COM object?
Thanks very much.
system
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Try this oldie good book about COM Developer's Workshop to COM and Atl 3.0, there are also many good articles here in CodeProject, but this book is a good introductory tutorial.
JO
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Thanks, but I don't not have enough time for a book now.
Because of the need in my job, time is limited,
so I need a quick way to implement a simple com object.
system
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Why don't you try creating a simple COM component and see if can it be called in ASP.
read this link COM[^]
The essence of COM is a language-neutral way of implementing objects that can be used in environments different from the one they were created in, even across machine boundaries
Check this section of CP for examples and niformation
COM[^]
Regards,
Sandip.
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Thanks.
I found that ActiveX is just for this.
system
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Hi,
I want to know how Visual C++ experts implement these complicated logical relations between visual components of a form.
For example when user switch between different radio buttons and you need to en/disable other components or some other tasks.
Actually I need some APIs (like EnumChildWindows) or some approaches(which I don't know any!) to make it more covnvenient to do such boring tasks!
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