load a Window

[Michiel]

Hi,
I have tree in my program. The nodes in the trees are 'Camera 1', 'Camera 2', 'Camera 3', etc. When I double click on the node 'Camera 1' then a window is created named as 'Camera_1', when I double click on nod 'Camera 2' then a nother window is load named as 'Camera_2' like that.....
My problem is that, When I double click on a node, 'Camera 1' at first time, then a new window is created and load name of that window is 'Camera_1' and when I double click again on that node then, another window is created named as 'Camere_1'. I want to block this. If one window is loaded, then when i double click on the same node, I need to show the old window no need to create a new one, if it is created early. ( check the name in memory)....
Please help me

Looks like you just repeated your question again. Seems like my suggestion would work. Is there something specific about it you don't understand?

[sabeesh]

Hi,
Can you explain how can i check, if the associated window-pointer is NULL?

[Michiel]

if (pointer == NULL) {
    ...
}

if (pointer == NULL) {
    ...
}

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[sabeesh]

Hi,
This is my function, When I double click on a node at that time this function is work,

void CreateCamWindow( QString Name, QString Title ){

CamPanel *Panel = new CamPanel;
Panel->setObjectName(Name);
Panel->setGeometry(QRect(161, 14, 250, 200));
Panel->setWindowTitle(Title);
Panel->show();
}

Here How can I check it? In the variable Name the value come as 'Camera_1'. Then, how can I check the window is loaded?

[Michiel]

Ok, so you say the names are unique. You could do it this way:

void CreateCamWindow( QString Name, QString Title ) {
    static QMap<QString, CamPanel*> panels;
 
    if (!panels.contains(Name)) {
        panels.insert(Name, new CamPanel);
    }
    panels[Name]->setObjectName(Name);
    panels[Name]->setGeometry(QRect(161, 14, 250, 200));
    panels[Name]->setWindowTitle(Title);
    panels[Name]->show();
}

void CreateCamWindow( QString Name, QString Title ) {
    static QMap<QString, CamPanel*> panels;
    
    if (!panels.contains(Name)) {
        panels.insert(Name, new CamPanel);
    }
    panels[Name]->setObjectName(Name);
    panels[Name]->setGeometry(QRect(161, 14, 250, 200));
    panels[Name]->setWindowTitle(Title);
    panels[Name]->show();
}

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But that's only because I have only seen that one function. There are more elegant ways to do the same.