In c + + builder, there is a tree structure, for example - aa
11
-- -- 22,
Click on the 11 a form, click on the 22 a form, in the void __fastcall TFormSyetem: : TreeView1Change (TObject * Sender, TTreeNode * Node) what is need to add the code in this function?

CodePudding user response:

This you need to give each child node set index, I did this, code sent to you see, if there is a better method, please people recommend

 void __fastcall TFormSyetem: : caidanTreeChange (TObject * Sender, 
TTreeNode * Node) 
{
If (Node - & gt; SelectedIndex==1)//11 said node 
{
From2 - & gt; Show (); 
} 
If (Node - & gt; SelectedIndex==2)//22 said node 
{
From3 - & gt; Show (); 
} 

} 

CodePudding user response:

This requirement, without processing in the OnChange event, in a TreeView OnClick event processing, first determines the TreeView - & gt; Selected is not NULL, and then, according to the Index of the Selected Text or other properties determine which node, make corresponding processing line,

CodePudding user response:

Demon elder brother 51 didn't rest?

CodePudding user response:

In the holiday, but still thinking of CSDN, so up to look at it, whenever you have

CodePudding user response:

I am idle bored, to CSDN to see

CodePudding user response:

Complement, in click OnClick event processing

CodePudding user response:

Thank you for your answer, problem solved! There's just one problem:
In c + + builder need a time to scroll on the system screen, for example, "today is: on May 1, 2013 on Wednesday," the next day is on Thursday, May 2, 2013, "", need to add the code in the time function? To solve?

CodePudding user response:

Time rolling? This did not understand what you want to effect,

CodePudding user response:

What call time rolling?

CodePudding user response:

, like this on the system screen scroll! What code to add in the time function!

CodePudding user response:

, like this on the system screen scroll, which is added in the time function code?

CodePudding user response:

 
//-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
//time on Label control and time control Label position, realize the rolling 
Void __fastcall TForm1: : Timer1Timer (TObject * Sender) 
{
//the size of the font rolling, here is set to 1, time to time according to their own requirements set 
Label1 - & gt; Left=Label1 - & gt; Left + 1; 
//whether the font across the Panel controls, if over, set the position of the Label for the initial value 
If (Label1 - & gt; Left==Panel1 - & gt; Width) 
{
Label1 - & gt; Left=0; 
} 

} 

CodePudding user response: