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It's going to involve some math... But can you use CDC::Ellipse, and CDC::SetClipRegion with a triangle to make the arc, and then just draw the sides of the Pie using plain old lines?
(and yes, I'm too lazy to do the math / code here!)
Iain.
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Hi!
I having a bit of trouble with drawing an arc and I hope somebody
here could give me a hint.
What I want is to draw an arc given the following parameters: a
bounding box (x1,y1,x2,y2) and a start- and end-angle.
The center point of the arc is the same as the center point of
the bounding box, and the start- and end-angle determines how
long the arc should be.
In example, a square bounding box and a start-angle of 0 and end-
angle of 360 will give a perfect circle (the inscribed circle of
the bounding box), while a "squashed" box and angles of 110 - 200
will give a quarter of an equally squashed circle (starting at 110
degrees).
Moreover, I would like to draw filled arcs (like a pie slice)
as well.
Can anybody give me a hint or an algorithm to look at? I've looked
at the normal Bresenham circle algo and think it should be possible
to adapt this, but I've been unsuccessfull so far.
WinCE Does not support MFC's ARC/Pie .
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Hello,
I have created 2 windows with styles
WS_VISIBLE | WS_CHILD | WS_BORDER |WS_MAXIMIZEBOX | WS_MINIMIZEBOX | WS_THICKFRAME |WS_OVERLAPPEDWINDOW | WS_VSCROLL | WS_HSCROLL.
When I maximize one window the child window gets merged with the mainframe window and now I can neither minimize this window nor can I see other windows. The restore icon is missing with this window.
What kind of styles should I include or exclude from the above styles of is there any coding involved?
Thanks
Prithaa
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hi
Refer to MSDN before making a dialog window as child,remove the WS_CHILD it will work for now..
swaroop
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If I remember, there was a setting somewhere to prevent stepping into template classes while debugging. ie. If I dereference a vector iterator while passing it to a method, I want to be able to hit F11 and step directly into the method, not the dereferencing.
Could anybody jog my memory?
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I have see this in someones tip here[^]
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Hello Friends,
can anybody tell me how to convert wchar to plcwstr. and how to use OutputDebugString() fun to print other datatypes such as int
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WCHAR is a wide character and LPCWSTR is a pointer to a string of WCHARs.
You can use CString::Format to convert any datatype to string and pass that CString to OutputDebugString.
"What's on your mind, if you will allow the overstatement?"
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If you want to print numerics in OutPutDebugString(), I would suggest you first create the string using sprintf() then pass the whole string into OutputSebugString().
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I really don't know if this is the right place to put this question, but I'm sure here are many professionals that will know what I'm interested in. Can somebody direct me to the BT mouse programming? I mean where I can get some good resources how the whole thing works? If I buy BT mouse and connect it to the PC do I have to do pairing, etc.? Actually what I want to do....I want to connect BT mouse to Symbian based smart phone and use it as an external device that controls mouse pointer in the Safari web browser. I'm not familiar with the technologies involved. I know that I need bluetooth stack which is already in the phone, but I don't really know how this is conceived on Windows. Who does the preliminary connection? PC or mouse? Do I need some kind of driver that will do the message translation from the mouse to the coordinates or at least directional movement? And yes, IS THIS INTERFACE STANDARDIZED? I mean, I'm sure all BT mouses work on Windows with basic functions. If you need additional buttons, then you install manufacturers mouse driver.
Best regards,
Rostfrei
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Hi everybody,
is it possible to add a message loop to a simple DOS-Application (with a _tmain starting-function)?
Big thanks for help 
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baerten wrote: DOS-Application
if you mean is a console application, yes its possible...
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Yes, it's a console application
Need i to launch a thread where i instantiate a class which has a message loop?
And all messages where handled into this class...
Thanks for your help
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No need of seperate thread. All you have to do is to create a window and below that you can write the message loop.
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There is no need to crate a window to have a message loop. Just put one in and it will work fine.
Steve
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at the main function of the console application i start a new thread via AfxBeginThread
In the function, which will be started from AfxBeginThread i used this code:
MSG msg;
while(1) {
if(::PeekMessage(&msg,hWndofTheConsole,0,0,PM_REMOVE)) {
printf("I GOT A MESSAGE");
if(msg.message == WM_USER+55) ..............
}
}
But i receive no message, even not he OnKeyDown Messages
An MFC Program opens this Console Application via CreateProcess
I can send keystrokes from out the MFC-Applic to the Console and there, the letters will be entered.
So the WM_KEYDOWN Messages will arrive correcly the console
I tested also the hWndofTheConsole, i performed a ShowWindow(hWndofTheConsole,SW_SHOW/SW_HIDE)
and the console appears and disappears, so the HWND is correct.
But, why i can't catch the messages 
Thanks for your help you two
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Are you wanting the console application to receive input from the GUI application? If so, see here and here.
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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Stephen Hewitt wrote: There is no need to crate a window to have a message loop. Just put one in and it will work fine.
I doubt this is because of the console window in the main thread. How ever I dont think a simmple message loop will work in a new thread, unless window is created.
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You don't need a window to have a message loop. The existence of the PostThreadMessage[^] function should hint at this: it sends a message but takes no window handle. The simple test application which follows proves the point:
#include "stdafx.h"
#include <windows.h>
#include <iostream>
#include <conio.h>
int main(int argc, char* argv[])
{
using namespace std;
DWORD idUs = GetCurrentThreadId();
PostThreadMessage(idUs, WM_APP, 0, 0);
MSG msg;
while (GetMessage(&msg, NULL, 0, 0))
{
if (msg.message == WM_APP)
{
cout << "Got message but have no window!" << endl;
PostQuitMessage(0);
}
}
cout << "Press any key...";
_getch();
return 0;
}
In short: messages are sent to threads or windows (and windows are always ownded by a particulat thread) ; message pumps process messages for a particular thread.
Steve
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I set the loop with ::PeekMessage into the main_function, but no effect
How do you mean "create a new window to add a message loop" to create a simple CDialog-derived window ?
In this case the dialog has a new Handle and the MFC Application sends the messages to the process/main-thread, so the messages don't travel to the dialog, or?
All this work to transmit two int's to another process 
I think i will write the int-values as text and the Console reads the values, that's very stupid,
but works 
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I think its hard to get the messages of a console window. I am not sure but i think you can try hooking( SetWindowsHookEx() ).
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Try here[^]; this section of Code Project deals with inter-process communication. There are easier ways to pass data between processes than the Windows message mechanism, especially when both of the apps aren't windowed applications.
Software Zen: delete this;
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convert cstring to const unsigned short *
How can i achieve this??
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This is a really bad idea. A CString is an object representing a memory area in the PC. You can interpret to a pointer BUT it should be temporary. => (LPCSTR).
(const unsigned short *)(LPCSTR)
But there is no unsigned short  !!!!
RTFM
Greetings from Germany
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