C / C++ / MFC

Re: How can I paste data to other windows (who ever is accepting) ?

2-Apr-09 17:07

When I click a hot key combination (Ctrl+Shift+P) my program do copy some text to the clibboard,

So I can paste it to any window by holding Ctrl+V

Now I like to automate this and be able to do the Ctrl+V programatically,

Lets assume I just want to paste just anything to other windows - so I can get started,

I have tried this, but I guess I'm missing something:

SendMessage(WM_PASTE, 0,0);

also tried:

BroadcastSystemMessage(BSF_POSTMESSAGE | BSF_IGNORECURRENTTASK,
BSM_ALLCOMPONENTS,
WM_PASTE,
(WPARAM)NULL,
(LPARAM)NULL);

I'd like to broadcast a "paste" message (or "Ctrl+V") so I will not have to find the current active window and get its focus,

Any suggestions ?

Best Regards - Yovav Gad
CEO and founder of MicroMighty, Inc.

modified on Thursday, April 2, 2009 11:58 PM

Niklas L2-Apr-09 23:02

2-Apr-09 23:02

I tried something similar a few yeras back to aid in filling in forms that required the same data over and over, and as far as I can remember, different applications needed different handling. You have to try sending keystrokes to some, and WM_PASTE to some, and some applications do not even use a window, but a custom made input and cannot be manipulated at all.

Sorry, but to my knowledge there is no universal method that works everywhere.

Re: How can I paste data to other windows (who ever is accepting) ?

Yovav3-Apr-09 1:23

Re: How can I paste data to other windows (who ever is accepting) ?

3-Apr-09 1:23

Yea, you are probably right,

I made some progress, however - it only works in some places (like notepad...)

POINT pt;
GetCursorPos(&pt);
CWnd* editControl;
editControl = WindowFromPoint(pt);
editControl->GetFocus();
editControl->SendMessage(WM_PASTE, 0, 0);

I also tried to programatically click Ctrl+V and cause a paste like this:
::SendMessage(GetForegroundWindow()->m_hWnd, WM_CHAR, 22, 0x56);

But it seems to have the same problem - only works in some places (like notepad...)

I wonder how can I better send the Ctrl+V and make the window/control think he got Ctrl+V clicked and do the paste for me (to which ever CEdit / CView control being used)

Please let me know if you have any suggestions.

Best Regards - Yovav Gad
CEO and founder of MicroMighty, Inc.

David Crow3-Apr-09 3:15

David Crow

3-Apr-09 3:15

Yovav wrote:
I wonder how can I better send the Ctrl+V...

Have you tried keybd_event()?

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Re: How can I paste data to other windows (who ever is accepting) ?

Iain Clarke, Warrior Programmer3-Apr-09 1:22

Re: How can I paste data to other windows (who ever is accepting) ?

3-Apr-09 1:22

In addition to Niklas' comments, I can see another problem.

I'll pretend your idea works. You would then make EVERY top level window receive a paste message, so they'd all perform a paste. That includes explorer, Invisible windows controlling tray notification icons... And that may be a BAD THING(tm).

Is it really so bad to have the user in control of their own PC? They spent the money on it, after all...

Iain.

In the process of moving to Sweden for love (awwww).
If you're in Scandinavia and want an MVP on the payroll (or happy with a remote worker), give me a job!

Yovav3-Apr-09 1:35

Re: How can I paste data to other windows (who ever is accepting) ?

3-Apr-09 1:35

Well, its not really a problem - because I am sending the "WM_PASTE" message only to that specific control on which the user had put the cursor on,

POINT pt;
GetCursorPos(&pt);
editControl = WindowFromPoint(pt);
editControl->GetFocus();
editControl->SendMessage(WM_PASTE, 0, 0);

Also - the user is not going to lose control over anything,
This program gonna help users run and paste data exactly like they want it.

Best Regards - Yovav Gad
CEO and founder of MicroMighty, Inc.

Niklas L3-Apr-09 2:40

3-Apr-09 2:40

Iain Clarke wrote:
Is it really so bad to have the user in control of their own PC?

Well, yes and no Big Grin | :-D

. In my specific case my friend got so tired of filling identical data (like company name and address) in some text fields over and over so I offerd a way to just put the cursor in the right place and hit a user defined short-cut-keystroke, et voila: User defined text -> clipboard -> edit control.

I'm just saying there could be a good reason for doing this.

Re: How can I paste data to other windows (who ever is accepting) ?

Iain Clarke, Warrior Programmer3-Apr-09 2:53

Re: How can I paste data to other windows (who ever is accepting) ?

3-Apr-09 2:53

Well, my comment was more about the broadcast idea...

I'll trust your domain expertise on this though. Or you mercenary desire for a customer to give you money!

Iain.

In the process of moving to Sweden for love (awwww).
If you're in Scandinavia and want an MVP on the payroll (or happy with a remote worker), give me a job!

David Crow3-Apr-09 3:18

David Crow

3-Apr-09 3:18

Niklas Lindquist wrote:
I'm just saying there could be a good reason for doing this.

And calling BroadcastSystemMessage() is not a solution for that reason.

Re: How can I paste data to other windows (who ever is accepting) ?

Yovav3-Apr-09 20:29

How to get a huge struct array?

3-Apr-09 20:29

I don't understand exactly how the WM_PASTE message is getting picked up,

but it might be safe to broardcast it everywhere if it only getting picked up in one place where the cursor and focus is,

remember - my intention is to let the user who already have his cursor focused on some text control to paste specific data, but the user must put the focus first before it will do anything...

Best Regards - Yovav Gad
CEO and founder of MicroMighty, Inc.

jebbe2-Apr-09 16:02

2-Apr-09 16:02

The huge array my algorithm need may be contain more than 2^100 struct elements.I don't know how to solve. Confused | :confused:

Luc Pattyn2-Apr-09 16:41

Luc Pattyn

2-Apr-09 16:41

There is no question, so the only thing I can do is provide a comment. Here it is:
an "algorithm" that needs more memory than any reasonable system can hold, is not an algorithm at all. It is a kludge.

Smile | :)

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Niklas L2-Apr-09 23:35

2-Apr-09 23:35

I'm not sure Alan Turing would agree Big Grin | :-D

jebbe3-Apr-09 20:24

3-Apr-09 20:24

Actually,this algorithm is just for a theoretical system.

Stuart Dootson2-Apr-09 21:19

Stuart Dootson

2-Apr-09 21:19

The only thing that might help is sparse arrays[^] (if a lot of your array elements are some null value).

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

jebbe3-Apr-09 20:28

3-Apr-09 20:28

I can't find any element could be ignored.

Iain Clarke, Warrior Programmer3-Apr-09 1:51

3-Apr-09 1:51

That's 1,267,650,600,228,229,401,496,703,205,376...
Are you doing a simulation of all of the fundamental particles in the universe?

And a 64bit processor isn't going to help you either. If each element took a byte, thats 1,267,650,600,228,229,401 Terabites (using vendors definition!) Assuming you had a bunch of terabite drives in RAID999, and each drive takes 10cm x 2cm x 20cm, you could fit 10x50x5 (in a cubic metre. That's with no cables or packaging.

So, 507060240091291760 m^3. Now, a container can hold approximately 75 cubic metres. Let's Assuming you squich it really hard to 100m^3. That's 5070602400912917 containers.

Looking at http://en.wikipedia.org/wiki/Container_ship[^], the largest container ship displaces 157,000 tons of water. Which is 157,000 cubic metres of cargo (assuming the boat is made of plywood). Thats 3229683057906 of these container ships.

Let's assume your local port can handle ten of these ships every ten hours, so averaging one an hour. It would take 3686852 centuries to just deliver this to you.

If they just delivered the last one now, they'd have had to start manufacturing them a 1/3rd of a million years BC.

I think you need to take another look at your algorithm, before I have to calculate how much mass you'd have to destroy in a matter-antimatter collider just to power the hard drive array for an hour.

Iain.

(Can you tell it's lunchtime?)

In the process of moving to Sweden for love (awwww).
If you're in Scandinavia and want an MVP on the payroll (or happy with a remote worker), give me a job!

Niklas L3-Apr-09 2:58

3-Apr-09 2:58

Iain Clarke wrote:
container ship displaces 157,000 tons of water. Which is 157,000 cubic metres of cargo

This only holds if the density of the cargo is 1. So unless you can prove it is, Jabbe should be able to do what he wants. Poke tongue | ;-P

Iain Clarke, Warrior Programmer3-Apr-09 3:13

3-Apr-09 3:13

To quote from a quick google search:
The density of pure water is 1000 kg/m3. Ocean water is more dense because of the salt in it. Density of ocean water at the sea surface is about 1027 kg/m3

I remembered it being 1 kg/litre, and there's 1000liter/m^3 so I was assuming fresh water...

I'm terribly sorry - the users algorithm is 2.7% more valid than I thought...

I expected many quibbles over my math - but not over the fundamental numbers!

Iain.

In the process of moving to Sweden for love (awwww).
If you're in Scandinavia and want an MVP on the payroll (or happy with a remote worker), give me a job!

jebbe3-Apr-09 20:49

3-Apr-09 20:49

My hard computational problem is NP—complete.However，my current computing strategy is based on the enumerative method，which causes the size of the initial record to increase exponentially.

Niklas L6-Apr-09 22:34

6-Apr-09 22:34

Actually, it was not the numbers I was concerned about, but rather the assumption that the density of the drives equals the density of the displaced water.

I assume your ship has a hull, and thus it displaces the mass of the disk drives in water (salt or fresh) rather than the volume of them.

Jebbes approach is still not proven impossible.

Iain Clarke, Warrior Programmer6-Apr-09 22:40

6-Apr-09 22:40

Hmmm, you do have a point there... Hard drives are denser than water (no, I'm not testing this, but I have held bottled water).

So, if you would be so kind as to weight one of your Tb hard drives, then submerge it and get the displaced volume, I would be happy to recalculate whether then delivery start time was before or afer mankind descended from the trees.

(I don't mean little Jenssen getting an apple last week).

As for impossibility... I know you all are in denial, but you're simply fictions of my deranged imagination. So anything solution that happens after I die / wake up doesn't count...

Iain.

In the process of moving to Sweden for love (awwww).
If you're in Scandinavia and want an MVP on the payroll (or happy with a remote worker), give me a job!

Niklas L6-Apr-09 23:15

6-Apr-09 23:15

It is common knowledge that if you fill a disk drive with light weight data structures, it will float on water.