C / C++ / MFC

12-Jul-05 3:53

Hi
Im using SetCapture() to capture mouse events, so when the user clicks the program writtes something in that place.
Thats working great, but i would like to change the mouse cursor until user clicks.
I tried using SetCursor() but just works in my client area.
And WM_SETCURSOR is only sent to my window if the user has a button pressed.

Any sugestions?

Thanks in advance

Blake Miller12-Jul-05 4:56

Blake Miller

12-Jul-05 4:56

Put a transparent window over the entire desktop and have it set the cursor. Once user clicks, translate it into the coordinate or whatever you want, and then hide the transparent window. I am pretty sure winow overrides the cursor shape for each window the mouse goes over, so you need to cover the entire portion of your 'working area' with a window that can 'force' the cursor to your desired shape.

OTHERWISE, take a look at some of the samples that use the 'window finder' tool, since they seem to be able to change the mouse cursor regardless of the window it is over. I am also pretty sure they rely upon the left mouse button being down for some reason - maybe merely to know when user has made a selection when the button is released, but since I never had occasion to use one of these, you will have to reasearch that part yourself.

Kharfax12-Jul-05 5:03

12-Jul-05 5:03

Good idea, i gona try it

Thanks for the suggestion Wink | ;)

Trollslayer12-Jul-05 8:34

Trollslayer

12-Jul-05 8:34

Create a handler for WM_MOUSEMOVE, this gives you both local position and button states.

Elaine Rose | [Rose]

The tigress is here Big Grin | :-D

Kharfax12-Jul-05 10:44

12-Jul-05 10:44

Thanks for the suggestion Elaine Smile | :)

But WM_MOUSEMOVE is sent to your application just if a button is pressed once the cursor leaves your client area.

That's why you have to drag the target cursor in programs like spy++

Trollslayer12-Jul-05 11:33

Trollslayer

12-Jul-05 11:33

You will get events every time a new mouse position is regsitered by your application then reads the mouse button states and can detect a click that way.
You could also use OnClick and follow the last position given by your OnMouseMove handler.

The tigress is here Big Grin | :-D

Re: I found a solution

Kharfax13-Jul-05 4:57

How to Create inbound application using Tapi 3.0

13-Jul-05 4:57

At last i found a solution...

I just simulate a drag operation, to do that, when the user clicks my button i simulate that the user press the right button using

mouse_event(MOUSEEVENTF_RIGHTDOWN,0,0,0, GetMessageExtraInfo());

Then when the cursor is outside my client area im still able to set the cursor shape.

Once the user clicks in the other window, i simulate that the user releases the right button using

mouse_event(MOUSEEVENTF_RIGHTUP,0,0,0, GetMessageExtraInfo());

And after that, i simulate the click the user has just done

mouse_event(MOUSEEVENTF_LEFTDOWN,0,0,0, GetMessageExtraInfo());
mouse_event(MOUSEEVENTF_LEFTUP,0,0,0, GetMessageExtraInfo());

This work great for me, maybe if you have a Context menu, this isn't going to work, you could try using the middle button...

Ok, i wrotte this because i saw a lot of post similar to mine, and very few answers to this problem.

Thx to all for your suggestions

riyajain12-Jul-05 3:02

riyajain

12-Jul-05 3:02

Hello,

i am developing inbound application using Tapi 2.0. now i want to
convert that application in Tapi 3.0. i don't know much about com.
any one know how to create inbound application using Tapi 3.0.

Any source code available. Plase send me source code for handling
incoming call.

please help me.

Best regards

Riya jain

dafdd

How do I read a particular registry key

Matthew Devine12-Jul-05 2:37

Matthew Devine

12-Jul-05 2:37

Hi Everyone,

I want to be able to read the Registry "ProxyEnable" located within HKEY_CURRENT_USER and located at the following path Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings. What I want to be able to do is tell whether "ProxyEnable" is on or off. Not quite sure how to do that particular piece though.

Thanks in advance,
Matt

Jose Lamas Rios12-Jul-05 2:59

Jose Lamas Rios

12-Jul-05 2:59

Add KEY_QUERY_VALUE to the access rights specified when opening the key, and then use RegQueryValueEx[^].

--
jlr
http://jlamas.blogspot.com/[^]

Matthew Devine12-Jul-05 3:47

Matthew Devine

12-Jul-05 3:47

The issue I seem to be having is that ProxyEnable is actually a Reg_DWORD key, so I don't think I'm reading it in correctly and I'm not sure how to verify that its actually an enabled key. Basically if I were to get a value back from doing a query on that key, what do I compare its value to?

Jose Lamas Rios12-Jul-05 4:00

Jose Lamas Rios

12-Jul-05 4:00

Matthew Devine wrote:
Basically if I were to get a value back from doing a query on that key, what do I compare its value to?

As I understand it, 1 means enabled, 0 means disabled...

--
jlr
http://jlamas.blogspot.com/[^]

Matthew Devine12-Jul-05 4:26

Matthew Devine

12-Jul-05 4:26

Yeah that's exactly right, that's what I'm seeing

HKEY hKeyRoot,hKeyNew;
LPCTSTR lpSubKey;
LPTSTR Value;
DWORD retcode;
DWORD Value_type;
DWORD Value_data;
DWORD Value_size;

hKeyRoot = HKEY_CURRENT_USER;
lpSubKey = "Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings";
Value = "ProxyEnable";

retcode = RegOpenKeyEx
(
hKeyRoot,
lpSubKey,
0,
KEY_QUERY_VALUE,
&hKeyNew
);
if (retcode != ERROR_SUCCESS)
MessageBox("Error opening key",_T("NO"));

retcode = RegQueryValueEx
(
hKeyNew, // HKEY (hkey) handle of key to query
Value, // LPSTR (lpValueName) address of name of value to query
NULL, // LPDWORD (lpReserved) reserved
&Value_type, // LPDWORD (lpType) address of buffer for value type
(BYTE *) &Value_data,// LPBYTE (lpData) address of data buffer
&Value_size // LPDWORD (lpcbData) address of data buffer size
);
if (retcode != ERROR_SUCCESS)
MessageBox("Error reading key",_T("NO"));
else
fout<<"Registry Value - "<

Jose Lamas Rios12-Jul-05 4:41

Jose Lamas Rios

12-Jul-05 4:41

Matthew Devine wrote:
This seems to have solved the problem that I was having

Good!

Matthew Devine wrote:
Thanks again Jose, you have been a big help.

You're welcome. Glad to be of help.

--
jlr
http://jlamas.blogspot.com/[^]

David Crow12-Jul-05 5:16

David Crow

12-Jul-05 5:16

Matthew Devine wrote:
...the reason the compare wasn't working was simply because I only had 1 "="'s after for Value_data

All the more reason to put the constant on the left side of the operator!

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

How to place image in Excel?

Ravi Bhavnani12-Jul-05 3:01

Ravi Bhavnani

12-Jul-05 3:01

See Stuart Konen's excellent CRegistry[^] class. Cool | :cool:

My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music | Trips
ravib@ravib.com

Member 95748212-Jul-05 2:12

Member 957482

12-Jul-05 2:12

I'm using Excel Automation (#import method) to write data to an Excel file from my MFC application. The data export is working fine, with one exception.

The document for my app contains an enhanced metafile (as an array of bytes and a handle). I'd like to place this image in the Excel workbook I'm creating.

Can anyone help?

Thanks,
Greg Wellman

INI file processing from memory

_rubinho_12-Jul-05 1:46

_rubinho_

12-Jul-05 1:46

I need to process an INI file from a block of memory rather than a file on disk (the file's been read in and sent wholesale over a network). Are there equivalents to GetPrivateProfileString and the like which don't take a filename as an argument, rather a block of memory to work with? Any other suggestions?

Thanks all!

Indivara12-Jul-05 2:27

Indivara

12-Jul-05 2:27

isn't writing the block of memory to a temporary INI file an option?
(don't know of any functions that work directly on memory)

- Indivara

"...This city desert makes you feel so cold.
It's got so many people but it's got no soul..."
- Gerry Rafferty, Baker Street

_rubinho_12-Jul-05 3:23

_rubinho_

12-Jul-05 3:23

Yeah that was my first thought and it's what I'll probably do now. I don't really like the idea as it feels a little unclean.

It surprises me that there aren't alternative INI file methods which work on memory blocks.

Cheers!

David Crow12-Jul-05 5:21

David Crow

12-Jul-05 5:21

So if the INI information came from a file already, why not use the INI functions to read it rather than circumvent them?

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

_rubinho_12-Jul-05 5:39

_rubinho_

12-Jul-05 5:39

The client sending the INI file data is dumb so I don't want it to interpret the INI file but send it over the network to the server which then interprets it.

Since I'm adding functionality and not writing a new system I wish to reuse the existing server's code which read INI files locally. E.g. there are functions in the server which exist:

ProcessINIFile(..., LPCSTR filename, ...)

And I want to extend these with:

ProcessINIFileFromMem(..., (void*)datablock, ...)

Having a set of INI file functions which worked on a block of memory (or even a CMemFile or similar) would make life much easier for me.

I agree that in any case it's not pretty but that's what you get when you're given a few tens of megs of a bunch of other people's code and asked to add bits to it in a hurry! Hmmm | :|