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Mon, 12 July 2010 18:28

281264
Messages: 270
Registered: June 2010
Location: Spain

Experienced Member

Hi,

I am struggling with this dummy application I am creating. The objective is to draw lines in the application�s screen after the user has selected �line� by clicking in its corresponding button.

Allow me to explain what I have done:

1.- I have created a struct containing a menu with three buttons-only button �line� does something.
2.- I have added a SplitterFrame and put the previous struct in its left. This allows me to have the application�s window for drawing.
3.- Functionality: once the user has selected �line� from the menu the screen shows mouse coordinates. Then the user clicks again and anchors one point of the line; after a second click the line is drawn on the screen; so far so good.
4.- However, in the next steps, I am finding some problems:
a.- the last coordinates remains in the screen after line creation process; how to get rid off it?
b.- My intention is to store all the lines in a container, so they can be redraw every time is needed. So far, I am using C++ vectors. I have created a struct �line- for contain lines (with four variables). The first problem arises when I try to create a line in my application: it does not compile. Second is the usage of vectors or U++ vectors. What to use? In general, is it allow to use the STL in U++?.

Many thanks,

Javier

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