Mouse Press/Release Events

[anda_skoa]

suggest how it can be done in other ways.

You could create a subclass if QGraphicsView and implement the mouse event handler methods. Then promote the GraphicsView in designer to that class.

Cheers,
_

[Vivek1982]

ok. will create my Ui form in mainwindow form. But declaration of GraphicsView to be done in sub class mouseevent.cpp and mouseevent.h, which is not having the Ui form. Im confused by seeing Scribblearea example. Here positions are collected from scribblearea.cpp and same is brought on mainwindow of class. Let me give a try. or i will post the code. based on comments i will try to do it. Thats wat i can do now

[Vivek1982]

Dear All,

Finally I got mouse press/release event on Graphicscene by eventfilter. Im getting the co-ordinates by mouse events. For the same positions to draw lines I have made paint event,but calling paint event from switch (event filter) is not possible. Any methods to call the paint event.

Thanks in advance

[stampede]

calling paint event from switch (event filter) is not possible

Store the mouse coordinates and use them later in paintEvent.

[Vivek1982]

ya.. Im able to get mouse positions on QpointF .. but in event filter points are stored .. by releasing the mouse button it has to draw line.. in header file i have void PaintEvent (QPaintEvent *event ).
but it has to be called after release button is left...
In header.cpp i have void MainWindow::PaintEvent then following by painter pen then draw line.. the positions are from event filter...

[stampede]

by releasing the mouse button it has to draw line

Call "update()" after storing the coordinates and releasing the mouse button.

[Vivek1982]

Im not able to access the values of Mouse press/release events from Case events to and not able to carry the same values to void MainWindow:aintEvent(QPaintEvent *e).
To draw the line, I have called update() function at Mouse release case in event filter.Im getting all junk or Hexa values in qDeug...

[anda_skoa]

And you want us to guess what is wrong?

[Vivek1982]

Sorry. Im not able to point it out. In case QEvent::GraphicsSceneMouseRelease: Im getting the ScenePos, but when it is called in void MainWindow:aintEvent(QPaintEvent *e) same data/value is not coming. Or im getting the address of it or wat. Im feeling wrong somewhere, but finding it hard to correct it

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Added after 51 minutes:

Yes I have stored in Case events in int x,y,x1,y1 for respective points. while calling same x,y,x1,y1 im not getting it when draw line or void MainWindow:aintEvent(QPaintEvent *e)

[anda_skoa]

This is pointless.

Unless you actually show the code where you store and retrieve the values, there is nothing anyone else can do.

Cheers,
_

[Vivek1982]

Hi..
I have attached the code in a zip file. I have to store the co-ordinates but mouse points are not getting stored in this variable for paint on scene.

[anda_skoa]

If you want to have access to the values from a different method, you should store them in the member variables, not in local variables.

Cheers,
_

[Vivek1982]

ok.. plz can i get link supporting on member varaible or how it can be used in my condition to store data and process while painting

[stampede]

can i get link supporting on member varaible

http://www.cplusplus.com/doc/tutorial/classes/