|
Hi,
Currently i write a program allow a user key in the numeric number into edit control. When the user press 'OK' button, it will check the contain what user key in, if is not a numeric number, it will popup a message box..
But i think this method is a bit not convenient, so is there any method can check the value when the moment the user is key in without press the "OK" button.
I'm waiting from your reply. Sorry for my poor English....
|
|
|
|
|
The parent window of the edit control will receive the EN_UPDATE[^] notification before the text is displayed. In this handler you can check the edit box text.
«_Superman_»
I love work. It gives me something to do between weekends.
|
|
|
|
|
DevelopmentNoob wrote: numeric number into edit control.
There is also property "Number" for edit control.
Check if it suits your need. I think it will not allow -ve and floating point numbers as well.
But it is better to check also as users can always copy paste anything they want in the edit box.
Regards,
Sandip.
|
|
|
|
|
Same as the previous reply: if you only need a basic numerical edit (no floating point for instance), then you can simply set it as a property on the edit control. Only numbers can be entered then.
If you need something a bit more complex (e.g. support for floating points), you could reuse one of the existing control on CP[^]. The first one looks promising but you might want something simpler. Simply check the list and find something that suits your needs.
|
|
|
|
|
Thank you for the guide. i will try my best to done it. 
by the way, the data i store is include the floating number..
|
|
|
|
|
Hi,
i need to increase the height of a headerctrl ..So can i call Movewindow() in DrawItem method...
Please correct me if im wrong..
|
|
|
|
|
Are you trying to increase the height of a list control's header control? If it is, I guess the only way for doing that is by changing the font size of the list control.
|
|
|
|
|
in onpaint() of headerCtrl i changed the font but the issue is only half of the font is visible in Header ctrl..when the font is bigger...
|
|
|
|
|
No no..Change the font ( Call Setfont() ) of the list control from the onInitdialog() function of the dialog.
|
|
|
|
|
|
In Windows Vista (only) when I double click on a file in Windows Explorer that is associated with my application Vista displays: Windows cannot find "abc.def". Make sure you typed the name correctly and then try again." Where abc.def is the file I double click on in Explorer and it is associated with my app.
My app starts, if it isn't already running and the file does get opened correctly. Likewise if my app is already running the file is opened correctly. But this error is always displayed.
If instead I use "Open With" and select my app the file opens and no error is displayed.
I've Google'd and found various posts from people getting this error with Word, Excel files etc. but no real solution.
|
|
|
|
|
Neville - a suggestion - why not use Process Monitor[^] to see what Windows is actually looking at - you may well find the operation that can't find abc.def, and that might give you the clue you need to solve the problem?
That's what I'd do, anyway! 
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
|
|
|
|
|
Thanks Stuart. I just tried PM and scanned several thousand log entries but nothing really stood out. MS has changed (broken) various aspects of File Associations with Vista and MFC in VS2008 has not been updated to address these issues. That said I don't think this is the cause of the error. It seems as though Windows Explorer is misreading what is going on.
|
|
|
|
|
Neville Franks wrote: MS has changed (broken) various aspects of File Associations with Vista
Mostly to do with DDE from what I've read?
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
|
|
|
|
|
Stuart Dootson wrote: Neville Franks wrote:
MS has changed (broken) various aspects of File Associations with Vista
Mostly to do with DDE from what I've read?
Yes DDE no longer works in Vista from Explorer, yet CDocManager::RegisterShellFileTypes() still registers as a DDE client. Further RegisterShellFileTypes() still uses HKEY_CLASSES_ROOT which can't be used on Vista. There is a Linker option "Per-User Config" and AfxSetPerUserRegistration() which I assume trigger RegOverridePredefKey() so HKCR morphs across to HKCU. And finally Vista has a new IApplicationAssociationRegistration::SetAppAsDefault Method which adds an app to the list of Default Applications and uses HKCR!!!
It only took me most of yesterday to get to the bottom of this. (:
|
|
|
|
|
Hopefully it won't change too much more for Windows 7...
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
|
|
|
|
|
Stuart Dootson wrote: Hopefully it won't change too much more for Windows 7...Unsure
Well I'll be testing that next. But one has to assume (pray/hope) it is the same as Vista.
I think I've finally found the cause which is a lurking HKCR shell\open\ddeexec = [open("%1")] entry. I thought I'd got rid of these, but this one reappeared. Maybe I'll end the week (Oz) on a good note after all.
|
|
|
|
|
Im looking for documents(programming languages) that would guide me in creating an interface that reads network data. So i guess i should start by creating the interface or finding out how to read network data and input database.
|
|
|
|
|
You will probably be more sucesful if you slit that work into separate tasks. For instance, learning how to create a UI is completely independant on learning how to read the network data. What is your experience in programming ? Did you already develop some programs with a UI ?
|
|
|
|
|
Im going to use ms visual web developer 2008 for the interface. in the .net frame work there is System.Net.NetworkInformation class which pulls network information. But im not really sure how to use the class. and my programming experience is novie/mid-level
|
|
|
|
|
i have created a vc++ win32 project in visual studio 2008. can i have two cpp files in the source with int main()..??? if no then what do i have to do...how can i make them both execute simultaneously..?? please help i am totally new to this...
|
|
|
|
|
Yes, you can have many source files in a project.
Member 3112447 wrote: how can i make them both execute simultaneously..??
What do you mean by that?
It is a crappy thing, but it's life -^ Carlo Pallini
|
|
|
|
|
i mean each time i try and execute i only get the output of the first cpp code which contains int main..why cant i get the output of the second..
|
|
|
|
|
like i want to get output for this code:
#include <LEDA/graph/graph.h>
using namespace leda;
int main()
{
graph G; //define directed graph G
node center=G.new_node(); //create new node "center" of G
int i;
for (i=0;i<100;i++) {
node v=G.new_node(); //create new node v of G
G.new_edge(center,v); //create new edge of G
//with source center and target v
}
edge e;
forall_edges(e,G) { //iterate over all edges e of G
node source=G.source(e); //compute source of e
node target=G.target(e); //compute target of e
std::cout << "edge ";
G.print_edge(e); //print edge
std::cout << " has source ";
G.print_node(source); //print source
std::cout << " and target ";
G.print_node(target); //print target
std::cout << std::endl;
}
return 0;
}
and the following was the .cpp file i added to the source code folder at the time of installation
#include <LEDA/graphics/graphwin.h>
#include <LEDA/system/file.h>
#include <LEDA/graphics/bitmaps/button32.h>
#if defined(LEDA_NAMESPACE)
using namespace leda;
#endif
#if defined(WINMAIN)
int main() {
int argc;
char** argv;
get_command_line(argc,argv);
#else
int main(int argc, char** argv) {
GraphWin gw1;
int menu1 = gw1.add_menu("Routing Game Type");
gw1.add_menu("atomic",menu1);
gw1.add_menu("non-atomic",menu1);
//gw1.add_separator(menu1);
gw1.display(); gw1.edit();
return 0;
#endif
string frame_label("Leda Graph Editor (GraphWin %.1f)",
GraphWin::version());
GraphWin gw(frame_label);
window& W = gw.get_window();
gw.display(400,window::center);
W.set_icon_label("GraphWin");
W.set_cursor(XC_watch);
string home_dir = get_home_directory();
home_dir = home_dir.replace_all("\\","/");
string rc_file = home_dir + "/.graphwinrc";
if (is_file(rc_file))
{ gw.message("Loading Options from\\blue " + rc_file);
leda_wait(1.2);
gw.read_defaults();
}
else
{ gw.message("No\\blue " + rc_file + "\\black ~(using built-in defaults).");
leda_wait(1.8);
}
gw.message("");
if (argc > 1)
{ string fname = argv[1];
string gname;
if (fname.tail(4) == ".gml")
{ gname = fname.del(".gml");
int err = gw.read_gml(fname);
if (err) gw.acknowledge("Error Reading GML-File", fname);
}
else
if (fname.tail(7) == ".dimacs")
{ gname = fname.del(".dimacs");
int err = gw.read_dimacs(fname);
if (err) gw.acknowledge("Error Reading Dimacs File", fname);
}
else
{ gname = fname.del(".gw");
int err = gw.read_gw(fname);
if (err && err < 5) gw.acknowledge("Error Reading GW-File", fname);
}
gw.set_graphname(gname);
}
int but = 0;
//bool save_defaults = false;
int def_choice = 0;
W.set_cursor();
while (but == 0)
{
gw.edit();
panel P;
P.text_item("");
P.text_item("\\bf\\blue Exit GraphWin");
P.choice_item("Options in ~/.graphwinrc",def_choice,"keep","write","reset");
if (gw.unsaved_changes())
{ P.text_item("\\bf Graph not written since last change !\\n");
P.button("save gw",3);
P.button("save gml",4);
}
P.button("cancel", 0);
P.button("exit",1);
P.buttons_per_line(4);
but = gw.open_panel(P);
if (but == 3) gw_save_handler(gw);
if (but == 4) gw_save_gml_handler(gw);
if (but != 1 && gw.unsaved_changes()) but = 0;
}
if (def_choice != 0)
{ if (def_choice == 2) gw.reset_defaults();
gw.save_defaults();
}
return 0;
}
|
|
|
|
|
Rename the second one so it's called something other than main and call it from the first main. You'll also need to tell the first main about the renamed function:
first_main.cpp
extern int second_main(int argc, char** argv);
int main(int argc, char** argv)
{
return second_main(argc, argv);
}
second_main.cpp
int second_main(int argc, char** argv)
{
return someValue;
}
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
modified on Thursday, July 16, 2009 7:07 PM
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
