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I am working with IOCP just for a 3 days now (current project requirement) and starting to love it. Completion ports are a way better then creating tons of threads for connections and tons of events as well - you got everything in one place, its like, kind of message loop, isnt it?  having one struct, jumping from reading to writing and queuing stuff, defying operations, and performance for sure. Totally agree - IOCP is outstanding option - one port to rule them all  Ok, back to coding
011011010110000101100011011010000110100101101110
0110010101110011
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There are articles and even classes to tell how to dynamically move controls on forms.
I thought it should be a simple task to dynamically expand (MoveWindow) a control to fill available space under different user options, however, I cannot figure out how to dynamically determine the actual location of the new destination / size.
I have added an anchor button to get the location but I do not know how to dynamically get the location of this button.
I tried GetWindowRect , but that gives me location relative to the current window. GetClientRect gives me the actual size of the anchor button and that is no help either.
The “anchor button” is off the screen when the user selects the option and I use scroll to (up) bring it into view. Is is possible this is my problem and I need to recalculate the position after the scroll?
Still using VC6.0 and MFC, the app works for me, and no, updating to anything is not an option. Do not waste your and my time suggesting it.
Any constructive help will be as always appreciated.
Cheers
Vaclav
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Using GetClientRect() on your main window will tell you how much space is available, so you can resize your control to those dimensions to get it to fill the space. Also, I'm not sure how to do it in MFC, but in Win32 the structure filled by the BeginPaint() call will also give you the dimensions of the visible part of your window; maybe part of the CDC class will help.
The best things in life are not things.
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There's enough info in GetWindowRect(), see my answer... I'm sure CDC also has the information, since its the basis of drawing on the screen, but its not needed in this case.
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You're correct, but I'm still not sure that I fully understand what the problem is.
The best things in life are not things.
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He was just having problems getting the location of his anchor button on the screen to replace with one he was drawing out... but I think he realized his operations weren't all on what item he needed.
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GetWindowRect() should work once you've converted coordinates using ScreenToClient() and assuming you've done the operation on the correct item.
For example, if you want the location of an anchor button:
CWnd *anchor = GetDlgItem(IDC_BUTTON);
RECT anchor_rect;
anchor->GetWindowRect(&anchor_rect);
ScreenToClient(&anchor_rect);
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Thanks.
I was doing ScreenToClient on the wrong item!
Works as advertized.
Vaclav
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Happens... glad you've got that all worked out... don't forget to vote!
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Hi,
I am using visual studio 2008 MFC feature pack. My application has a "quick access toolbar" which is included in the MFC feature pack (it can be found at the top left of the main window. right next to the main menu).
My application is localized to several languages. Unfortunately, I can't find a way to translate the quick access toolbar and it's sub enries ("More Commands...", "Show Below the Ribbon" and "Minimize the Ribbon").
Does anyone know how to translate the quick access toolbar?
Thanks,
Kobi.
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I am getting following error, where my program somehow using SetGUIDValue function.
Error 7 error C2664: 'A_StringFromGUID2' : cannot convert parameter 2 from 'OLECHAR [64]' to 'LPSTR' c:\program files\microsoft visual studio 9.0\vc\atlmfc\include\atlbase.h 5696
Regards
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OLESTR's are unicode (ie, 16bits per character) and LPSTR is not-unicode (ie, 8bits per character).
So, I'm guessing you have a unicode / not-unicode problem.
Our usual cure here is to suggest people read the following article:
The Complete Guide to C++ Strings, Part I - Win32 Character Encodings[^]
Feel free to rate the article well if it helps you,
Iain.
I am one of "those foreigners coming over here and stealing our jobs". Yay me!
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Hi!
I've shown a new Dialog On clicking a button in another Dialog using the following code:
CNewDialog *Ptr=new CNewDialog();
Ptr->Create(IDD_DIALOG1,this);
Ptr->ShowWindow(SW_SHOW);
My problem is When I click the first Dialog, Focus doesn't switch to the first Dialog.
I've to minimize the new Dialog, if I want to see the first Dialog. How to set Focus
to a Dialog while it is clicked or pressed ALT+TAB?
My first form is created like this:
UINT TransForm::ThreadExec1(LPVOID param)
{
DWORD result =0 ;
TerminateThread(Retry::ThreadExec, 0);
TerminateThread(TransForm::ThreadExec, 0) ;
IndForm ObjIndForm;
AfxGetApp()->m_pMainWnd = &ObjIndForm;
ObjPtrIndForm=&ObjIndForm;
glo_error=3;
ObjIndForm.DoModal();
return result;
}
However,I can't change the code for the two Dialog's creation.
modified on Monday, June 27, 2011 4:54 AM
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I can see some problems:
1/ Unless you *really* know what you're doing it's a bad idea to create UI objects from multiple threads. It's like juggling with loaded guns whilst drunk. Sure, it may seem like a good idea at the time, but someone's gonna lose a toe.
2/ TerminateThread is also a really bad idea. I don't think I have *ever* used it. I've used plenty of Events, and BOOL's, and WaitForSingleMessage (hSomeThread, dwA_short_time)'s, but never TerminateThread.
That way memory leaks and crashes lie.
3/ To answer your actual question...
Ptr->SetFocus () ?
Iain.
I am one of "those foreigners coming over here and stealing our jobs". Yay me!
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Iain Clarke, Warrior Programmer wrote: I can see some problems:
1/ Unless you *really* know what you're
doing it's a bad idea to create UI objects from multiple threads. It's like
juggling with loaded guns whilst drunk. Sure, it may seem like a good idea at
the time, but someone's gonna lose a toe.
2/ TerminateThread is
also a really bad idea. I don't think I have *ever* used it. I've used plenty of
Events, and BOOL's, and WaitForSingleMessage (hSomeThread, dwA_short_time)'s,
but never TerminateThread.
That way memory leaks and crashes
lie.
3/ To answer your actual question...
Ptr->SetFocus ()
?
Iain.
Inside which Event?
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You showed two pieces of code. Only one has "Ptr" in it. Look up SetFocus on msdn for more information on that member function. The name is a bit of a give away though.
The second piece of code you showed implied you have threads creating dialogs. My points about threads and TerminateThread applied to all windows programs, not just the bits you shows.
Just in case I misunderstood your question, when I used "Event" above, I meant Win32's event synchronisation objects, created by
CreateEvent win32 function.
If you've not heard of them (and mutexes [*], and semaphores) then you really should not be creating windows outside the main thread. I may sound harsh, but I simply mean you should not be using them *yet*. Do some reading, play with some programs, understand the ideas, then go wild.
Read
http://www.flounder.com/uithreads.htm[^] and have a browse through flounder's other articles. I don't agree with everything he says, but the vast majority of it is spot-on.
Iain.
[*] mutices?
I am one of "those foreigners coming over here and stealing our jobs". Yay me!
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ObjIndForm.ShowWindow(SW_SHOW)
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not working. Crashes at crtexec.c at the following code:
(HINSTANCE)&__ImageBase,
NULL,
lpszCommandLine,
StartupInfo.dwFlags & STARTF_USESHOWWINDOW
? StartupInfo.wShowWindow
: SW_SHOWDEFAULT
);
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Here is the scenario
I have developed a custom class as below:
InsertEdit.h
class CInsertEdit :
public CWnd
{
DECLARE_DYNAMIC(CInsertEdit)
...
protected:
...
afx_msg void GetCustomerName();
afx_msg void GetInitialBalance();
afx_msg void GetPhoneNumber();
afx_msg void GetDateOfBirth();
afx_msg void GetCountry();
...
};
InsertEdit.cpp
#include "InsertEdit.h"
#define INSERTWINDOWCLASS L"INSERTWINDOWCLASS"
...
BEGIN_MESSAGE_MAP( CInsertEdit, CWnd)
ON_WM_CTLCOLOR()
ON_WM_CREATE()
ON_WM_PAINT()
ON_COMMAND(TEXT_2,GetCustomerName)
ON_COMMAND(TEXT_3,GetInitialBalance)
ON_COMMAND(TEXT_4,GetPhoneNumber)
ON_COMMAND(TEXT_5,GetDateOfBirth)
ON_COMMAND(TEXT_6,GetCountry)
END_MESSAGE_MAP()
IMPLEMENT_DYNAMIC(CInsertEdit, CWnd)
...
afx_msg void CInsertEdit::GetCustomerName()
{
wchar_t cst[256];
UserName.GetWindowTextW(cst,256);
MessageBox(cst,L"Test",MB_OK);
}
...
I am expecting that any type of command like "Click" or "key stroke" will call the GetCustomerName function called. but it is not.
CInsertEdit is a custom class with few edit class in it..
Am I missing anything?
Shall I have to add anything special on main Window class or anywhere else?
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Looking at your code (and I am far from being an expert on MFC) the only time that function will be called is via the TEXT_2 command. How does this command get invoked?
The best things in life are not things.
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Richard MacCutchan wrote: Looking at your code (and I am far from being an expert on MFC) the only time that function will be called is via the TEXT_2 command. How does this command get invoked?
TEXT_2 this is not a command. Its just a Macro constant.
ON_COMMAND macro create a set of code that ensure the call of the function.
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johny10151981 wrote: ON_COMMAND macro create a set of code that ensure the call of the function.
I guess you don't understand what the purpose of the ON_COMMAND macro is. Adding this to your program creates the code that will be called when the TEXT_2 command is invoked by the user. If you do not have any way of invoking the TEXT_2 command then this code will never run.
The best things in life are not things.
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I dont get it..........
Since when
TEXT_2 is a command?
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johny10151981 wrote: Since when
TEXT_2 is a command?
Since you put it in the ON_COMMAND macro.
Another example of an ON_COMMAND macro:
ON_COMMAND(ID_FILE_NEW, OnFileNew)
The ON_COMMAND macro in a message map is a way of telling the message mapper what to do with a WM_COMMAND windows message that has WPARAM=command id. In the case I wrote, wParam equals ID_FILE_NEW.
In the case you wrote, wParam equals TEXT2.
So, unless somewhere else in your code issues WM_COMMAND,wParam==TEXT2, your function will never get called. That other place could be window's menu handler, or the MFC code behind a toolbar, or a dialog button, or...
In another reply, you say TEXT2 is a macro. Do you mean:
#define TEXT2 1234
or something more complex?
Another problem you could be having is message routing. MFC does lots of work behind the scenes to give your objects the ability to response to commands. For example, CDocument never has a window, but it can respond to WM_COMMANDs.
Read this classic article from 1995. The re-read it. Then program a bit, then re-reread it. If you can't absorb it pretty well, you will struggle with MFC, and most windows programs. .Net may do things differently, but many of the principles are the same.
Meandering Through the Maze of MFC Message and Command Routing[^]
Don't forget to bookmark it!
Iain.
I am one of "those foreigners coming over here and stealing our jobs". Yay me!
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Thanks for the link, I've been looking for a decent explanation of this for years!
The best things in life are not things.
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