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1. Add form1 parameter to the constructor of form2
2. Pass "this" to form2 instance created in form1
3. Create a form variable of form1 in form2 to be assign the passed instance of forma.

on form parameters u can call hide() and show() functions up on requirement.

This little bit tricky to call another form, follow the steps below,

1. Button name on the main.ui is OK.
2. Create a slot in main class of main.h file as below,
public slots:
void on_OK_clicked();
3. Write the implementation for on_OK_clicked() as below
void main::on_OK_clicked()
{
4. Create object of whatever.ui (include whatever.h in this file)
5. Call show() or exec() of whatever object acordingly
}

It will work fine. Try this.

Thanks for replying to this problem :-) . I followed the instructions and could follow them but am stuck at a small problem.

I have a main form, on which I have an about button, which when pressed should display another form with text on it.

This is the snippet of code in the ui.h of the main form.
void mainform::openabout()
111 {
112 aboutform f;
113 //Show the about form
114 f.show();
115 }
aboutform.ui.h has
#include <qfile.h>
13
14 void aboutform::init()
15 {
16 //do nothing
17 }

in the pro file .ui files listed are mainform.ui aboutform.ui.
pro file has

TEMPLATE = app
2 LANGUAGE = C++
3
4 CONFIG += qt warn_on release
5
6 SOURCES += main.cpp
7
8 FORMS = mainform.ui aboutform.ui
9
10 unix {
11 UI_DIR = .ui
12 MOC_DIR = .moc
13 OBJECTS_DIR = .obj
14 }


I created the openabout slot by using the connection editor and when the about button is clicked the openabout function is executed. The code compiles fine, with qmake and make, but I don't see a binary for aboutform!! and so when I click the about button the second form does not show.

Is there some obvious mistake that I have committed. Do I have to separately compile aboutform?

Thanks in advance,
-A

Guys, if someone can see a mistake in my code (attached in the previous post)...please help me out.

Thanks,
-A