Problem in creating a model window

Question

Hi,
I am trying to open a window on the click of the button and I am getting the following error
Parameter windowInfo must not be null.
this is the code i wrote to open the window
IWDWindow excelLinkWindow;
try{
               wdThis.wdGetAPI().getComponent().getMessageManager().reportSuccess("excel"+wdComponentAPI.getComponentInfo());
            excelLinkWindow =
            wdComponentAPI.getWindowManager().createModalWindow(
            wdComponentAPI.getComponentInfo().findInWindows("Popup"));
            excelLinkWindow.setWindowPosition(WDWindowPos.CENTER);
            excelLinkWindow.setWindowSize(500, 1500);
            excelLinkWindow.open();
          }catch(Exception e ){
               wdThis.wdGetAPI().getComponent().getMessageManager().reportException("error"+e.getMessage(),false);
Please let me know the solution

Answer 1

HI
1.Create another new window named "Popup". Embed dynpro view in data navigator of this window (if view is in same component) else use "Embed interface view for a component instance",if view is from another component.
2. create a WinInstance Node of cardinality 1:1 and node element of java native type IWDWindow. in both primary and popup views.
3. Create mapping.
4. Create an action In caller view and write this piece of code in it.
IWDWindowInfo winInfo = wdComponentAPI.getComponentInfo().findInWindows("Popup");
     IWDWindow window = wdComponentAPI.getWindowManager().createModalWindow(winInfo);
     window.setTitle(" Purchase Order Unit");
     window.setWindowPosition(WDWindowPos.CENTER);
     *wdContext.currentWindowInstanceElement().setWinInstance(window);* // To handle called popup window
     window.show();
5. create a closeWindow Action in popup window and write this line to destroy window Instance.
wdContext.currentWinInstanceElement().getWinInstance().destroyInstance();
6. Right click on window name and choose properties then from properties copy window name and paste in your code i.e findInWindows("Popup"); This is just to ensure that there will be no typing error.
Thanks,
Mandeep Virk