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WindowFromPoint[^] has the following prototype:
HWND WindowFromPoint(POINT Point);
As can be seen, the return type is HWND, not HANDLE. Also, it takes a POINT point structure, not two numbers. Try something like this:
HWND h = WindowFromPoint(POINT(499,15));
Steve
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Thanks Steve for your reply.
However I haven't started coding this yet...I am still looking for documentation or something to refer to before I start coding.
However you could help me if you can by answering a couple of questions...the 3 Api's in VB examples and other documentation I have seen been used in VB. Am I right in saying If I create a Picture control in my application and having passed the correct parameters to the 3 API's, I should be able to get a portion of the desktop in that picture button?
Or is there a better way...All I am trying to do is from point 499,15 I need that section in a picture control of size height 615 and width of 375.
I guess it is doable all I have to do is make sure I pass the right parameters?
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FISH786 wrote: I should be able to get a portion of the desktop in that picture button?
What do you mean by "get a portion"?
Steve
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Like the source window is 800 X 600 however i only want a rectangular block of 17 X 22 from point 499,15. Into my application.
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What, you mean you want to do a screen capture of a portion of the picture control?
Steve
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No Screen Capture of a portion of a window into a Picture control.
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Hi,
I am wanted to convert/store a string, which has XML elements, into a dataset or data table. The string that I am reading from a service is the result of my query. I have written the following code,
{
DataSet ds = new DataSet();
StringReader stream = new StringReader(xmlString);
ds.ReadXml(stream);
DataTable dt = ds.Tables[0];
dg.DataSource = dt;
return dt;
}
I am receiving two different type of strings, they are
xmlString1:
<?xml version="1.0" encoding="UTF-8"?>
<nh:rows xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:nh="http://nhdb">
<nh:urnumber>0123456</nh:urnumber>
<nh:surname>xxxxx</nh:surname>
<nh:forename>yyy</nh:forename>
<nh:middlename></nh:middlename>
<nh:dob>1958-10-05</nh:dob>
<nh:address>Mxaxixlx</nh:address>
<nh:suburb>Prxxxx</nh:suburb>
<nh:state>Vxxx</nh:state>
<nh:postcode>3072</nh:postcode>
<nh:patientphone>phone</nh:patientphone>
<nh:gender>Female</nh:gender>
<nh:unit>Sxxxxx Oxxxx</nh:unit>
<nh:ward>Bxxx DPxx</nh:ward>
</nh:rows>
xmlString2:
<?xml version="1.0" encoding="UTF-8"?>
<nh:rows xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:nh="http://nhdb">
<nh:urnumber>0123450</nh:urnumber>
<nh:surname>Cxxxxxx</nh:surname>
<nh:forename>RxxxxxT</nh:forename>
<nh:middlename></nh:middlename>
<nh:dob>1954-07-19</nh:dob>
<nh:address>'ANNANDALE'</nh:address>
<nh:suburb></nh:suburb>
<nh:state></nh:state>
<nh:postcode></nh:postcode>
<nh:patientphone></nh:patientphone>
<nh:gender>Male</nh:gender>
<nh:unit></nh:unit>
<nh:ward></nh:ward>
<nh:urnumber>0123451</nh:urnumber>
<nh:surname>KROL</nh:surname>
<nh:forename>ANILLA</nh:forename>
<nh:middlename></nh:middlename>
<nh:dob>1958-12-10</nh:dob>
<nh:address>68A CLARENCE</nh:address>
<nh:suburb></nh:suburb>
<nh:state></nh:state>
<nh:postcode></nh:postcode>
<nh:patientphone></nh:patientphone>
<nh:gender>Female</nh:gender>
<nh:unit></nh:unit>
<nh:ward></nh:ward>
<nh:urnumber>0123452</nh:urnumber>
<nh:surname>GEYER</nh:surname>
<nh:forename>MAUREEN</nh:forename>
<nh:middlename></nh:middlename>
<nh:dob>1948-06-02</nh:dob>
<nh:address>19 JAYSON</nh:address>
<nh:suburb></nh:suburb>
<nh:state></nh:state>
<nh:postcode></nh:postcode>
<nh:patientphone></nh:patientphone>
<nh:gender>Female</nh:gender>
<nh:unit></nh:unit>
<nh:ward></nh:ward>
</nh:rows>
The above code works perfectly for the xmlString1 and it is converting a data table with single row of data for the cloumns urnumber, surname, forename, middlename, dob, address, suburb,state, postcode,patientPhone, gender, unit, ward.
When I am receiving the xmlString2, the data table is populated with only one column urnumber_Text(for all ur numbers in the xml string).
What am I missing here? Is there any other genuine way of doing it?
Thanks a Lot for your valuable time and invaluable advice.
Looking for advice,
Renu
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I'm using HttpSendRequest to POST data to a secure web page. Will the function automatically re-post the data if a reply isn't received in a certain time? The author of the destination web page claims they are receiving the post twice (30 seconds apart) but I'm 99.9% sure there is only one call to HttpSendRequest from my application. If the reply is received in a few seconds there's no problem.
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Hi,
I recently started my first project based around DLLs and have run into a little trouble.
I followed this tutorial: http://www.codeguru.com/cpp/cpp/cpp_mfc/tutorials/article.php/c9855
The code is split up into a header file and a source file.
It consists of a namespace, which contains variables and a class.
I am linking implicitly.
In a test program I can access the variables fine, no problems there, but when I use a function from the class, I get linker errors, eg:
<pre>1>ELQTest.obj : error LNK2019: unresolved external symbol "public: static bool __cdecl ELQ::Functions::CreateRot(void)" (?CreateRot@Functions@ELQ@@SA_NXZ) referenced in function _SDL_main</pre>
Now for some code:
DLL Header:
#ifndef _ELQDLL_H_
#define _ELQDLL_H_
#include <SDL.h>
#include <cmath>
#include <windows.h>
#pragma comment(lib, "SDL.lib")
#pragma comment(lib, "SDLmain.lib")
#if defined DLL_EXPORT
#define DECLDIR __declspec(dllexport)
#else
#define DECLDIR __declspec(dllimport)
#endif
namespace ELQ{
extern "C"{
#pragma data_seg (".globals")
DECLDIR bool keyboard[27], open;
DECLDIR double sins[720], coss[720], v, posx, posy, posz, f, h;
DECLDIR int WIDTH, HEIGHT, DEPTH, BPP, q, speed, theta, *map, o, lx1, ly1, lx2, ly2, lx3, ly3;
class Functions{
public:
static bool CreateRot();
};
}
}
#endif
DLL Source:
#include "ELQDLL.h"
#define DLL_EXPORT
#if defined DLL_EXPORT
#define DECLDIR __declspec(dllexport)
#else
#define DECLDIR __declspec(dllimport)
#endif
namespace ELQ{
extern "C"{
#pragma data_seg (".globals")
DECLDIR bool keyboard[27], open = false;
DECLDIR double sins[720], coss[720], v, posx, posy, posz, f = 10, h;
DECLDIR int WIDTH, HEIGHT = 10, DEPTH, BPP, q, speed, theta, *map = NULL, o, lx1, ly1, lx2, ly2, lx3, ly3;
DECLDIR bool CreateRot(){
for(int x = 0; x < 720; x++){
sins[x] = sin((x-360)*0.017);
}
}
}
#include "stdafx.h"
#include "ELQDLL.h"
#include <iostream>
SDL_Surface *screen;
int main(int argc, char *argv[]){
if(ELQ::Functions::CreateRot())
system("PAUSE");
return 0;
}
Any idea what could be wrong?
I've played around with all sorts of combinations of class definitions, export/import symbols etc, yet cannot get this to work.
Look forward to your input,
Thanks,
Nat.
PS: Oh, I should say that when I compile the DLL, I get a stream of inconsistency messages, could this be related?
"Sir, I protest. I am NOT a merry man!"
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Those extern "C" statements look wrong - especially as a) you're using namespaces and b) you're enclosing class definitions in them. Now, namespaces and classes are C++ features - they really aren't compatible with extern "C", which specifies that the names enclosed by the extern "C" are exported as undecorated, C names rather than decorated C++ names.
BTW - a decorated C++ name is something like ?CreateRot@Functions@ELQ@@SA_NXZ, your missing symbol...
So - try removing all extern "C" things. The only reason for extern "C" is to export functions compiled with a C++ compiler in a form compatible with C. You're exporting namespaced functions and classes - they will never be compatible with C...
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
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Thank you very much!
I feel like a total fool now, though. Classes in C?! They should revoke my C++ licence for that. 
"Sir, I protest. I am NOT a merry man!"
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Don't sweat it man - we've all done it one time or another!
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
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See I have a SDI app with a (e.g.) CEditView drieved view. Now I want to create another view of my document, drived from (e.g.) CRichEditView. I dislike the user to have a splitter window at the execute time, but when pressing a menu item. can I use CFrameWnd::CreateView? how if yes?
Thank you masters!
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Do you want to display both views at once (in which case having a splitter is really the best idea) or one view at a time?
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
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Yes, both at once
Thank you masters!
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Since CRichEditView is derived from CView you must use CRichEditView::Create (Actually CWnd::Create) and then use CDocument::AddView. CFrameWnd::CreateView is for views that are not derived from CView.
«_Superman_»
I love work. It gives me something to do between weekends.
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class Employee {
public:
Employee(string name = "No Name",
string id = "000-00-0000",
double salary = 0)
: _name(name), _id(id)
{
_salary = salary;
}
...
};
I'm not sure what the [ : _name(name), _id(id) ] does. Can anyone please explain?
Thanks
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They're initializer shortcuts for your member variables. Those statements are the same as saying
_name = name;
_id = id; immediately within your constructor body.
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Quick follow up:
: _name(name), _id = id
{
_salary = salary;
}
Shouldn't I be able to do this?
Thanks
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That's not allowed, see, for instance [^].
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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No, but you can do this.
: _name(name)
{
_id = id;
_salary = salary;
}
The difference is that _name(name) is initialization and _id = id is assignment.
This is equivalent to
type _name = name; and
type _id;
_id = id;
«_Superman_»
I love work. It gives me something to do between weekends.
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Hello su_penguine,
Its called constructor initializer list. Check this[^] and this[^] for more information.
Regards,
Jijo.
_____________________________________________________
http://weseetips.com[ ^] Visual C++ tips and tricks. Updated daily.
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Does anyone know why Skype seems incompatible with Vista Home edition?
Sorry its not a C++ question. But you guys are the best.
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Ric Ashton wrote: Does anyone know why Skype seems incompatible with Vista Home edition?
Because your question is incompatible with this forum. 
Better place to ask :Here[^]
He never answers anyone who replies to him. I've taken to calling him a retard, which is not fair to retards everywhere.-Christian Graus
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Ric Ashton wrote: Sorry its not a C++ question.
You are indeed correct.
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