Home » Extra libraries, Code snippets, applications etc. » U++ users applications in progress and useful code snippets, including reference examples! » simple TopWindow... branch GUI_APP_MAIN
| simple TopWindow... branch GUI_APP_MAIN [message #212] |
Sat, 03 December 2005 14:14  |
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fudadmin
Messages: 1321
Registered: November 2005
Location: Kaunas, Lithuania
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Ultimate Contributor
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if it helps for the beginners...
start learning..
Step 1 .the minimal  ? gui program in U++:
"titleless Window":
#include <CtrlLib/CtrlLib.h>
GUI_APP_MAIN
{
TopWindow().Run(); //creates, opens and starts pumping messages...
}
2. let's make much more sophisticated- "title1 Window":
#include <CtrlLib/CtrlLib.h>
GUI_APP_MAIN
{
TopWindow().Title("title1").Run(); //creates window and its title, opens and starts pumping messages...
}
3. "title1 Window, Zoomable,Sizeable":
#include <CtrlLib/CtrlLib.h>
GUI_APP_MAIN
{
TopWindow().Title("title1").Zoomable().Sizeable().Run(); //creates window and its title, opens and starts pumping messages...
}
4. a) "title1 Window, setRect" this way doesn't work:
#include <CtrlLib/CtrlLib.h>
GUI_APP_MAIN
{
TopWindow().Title("title1").SetRect(0, 0, 260, 80).Run(); // should create window and its title, open and start pumping messages... but
//error C2228: left of '.Run' must have class/struct/union type
type is 'void'
}
Why? I don't know. We need to ask the creators...
But it works in the next examples I'm going to put in a different topic. So, watch the space... 
Edited:
4 b) "title1 Window, setRect" - it works like this:
#include <CtrlLib/CtrlLib.h>
GUI_APP_MAIN
{
TopWindow().Title("title1").Run();
TopWindow().SetRect(0, 0, 260, 80);
}
[Updated on: Sat, 03 December 2005 17:28] Report message to a moderator |
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| Re: simple TopWindow... branch GUI_APP_MAIN [message #227 is a reply to message #212] |
Sun, 04 December 2005 19:01  |
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mirek
Messages: 13975
Registered: November 2005
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Ultimate Member |
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| fudadmin wrote on Sat, 03 December 2005 08:14 |
4. a) "title1 Window, setRect" this way doesn't work:
#include <CtrlLib/CtrlLib.h>
GUI_APP_MAIN
{
TopWindow().Title("title1").SetRect(0, 0, 260, 80).Run(); // should create window and its title, open and start pumping messages... but
//error C2228: left of '.Run' must have class/struct/union type
type is 'void'
}
Why? I don't know. We need to ask the creators...
|
Because SetRect is method of Ctrl, not TopWindow and it returns "void". Therefore:
TopWindow win;
win.Title("Title");
win.SetRect(0, 0, 260, 80);
win.Run();
Actually, what methods are supposed to return *this for method chaining is debatable. Usually they are "property" methods (or "modifiers") that are used to setup some initial state.
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