ClearOperationHistory does not work for "previous"/"next"

[cew]

Hi there,

if I load a document A.pdf and open another document named B.pdf, the navigation element (green buttons) "previous" gets active.
In my case, the document A.pdf does not exist anymore because it was just a temporary file.
Now the user clicks on the "previous" command and gets an error that A.pdf does not exist. That's true but not what I want.

I tried to clear the DocumentOperationHistory (Global::OperationsHistoryChanged got raised) using:

Code: Select all

DoDocumentVerb(docID, null, "ClearOperationsHistory", vDataIn, out OutPar, 0);

but this does not work for the navigation commands "<-" and "->"

What can be done?

Best
cew

[Stefan - PDF-XChange]

Hello Cew,

I noticed that the sample in the manual is with two NULLs after the command name:

...
DoDocumentVerb(docID, NULL, "ClearOperationsHistory", NULL, NULL, 0);
...

So can you check if it works this way - and if not we will check tis further.

Best,
Stefan

[cew]

DoDocumentVerb(docID, NULL, "ClearOperationsHistory", NULL, NULL, 0);

This leads to

Code: Select all

The best overloaded method match for 'Roesberg.PDF.Base.AxCoPDFXCview.DoDocumentVerb(int, string, string, object, out object, int)' has some invalid arguments	
Argument 5: cannot convert from '<null>' to 'out object'

With my source code the history will be cleared. Undo/Redo will be disabled after that clear. But the previous/next commands are still enabled.

So can you check if it works this way - and if not we will check tis further.

It's your turn

Best,
cew

[Stefan - PDF-XChange]

Thanks!

Checking at our end!

Best,
Stefan

[Vasyl - PDF-XChange]

Hi, cew.

I tried to clear the DocumentOperationHistory (Global::OperationsHistoryChanged got raised).

Why have you decided that document navigation features "back"/"forward" are the same as "Undo"/"Redo" features?
Currently the "ClearViewHistory" feature is inaccessible for developers, you can disable "back"/"forward" only. To disable it use:

Code: Select all

pdfViewer.SetProperty("Commands["GoBack"].State", "offline", 0);
pdfViewer.SetProperty("Commands["GoForward"].State", "offline", 0);

HTH

[cew]

Hi Vasyl,

Currently the "ClearViewHistory" feature is inaccessible for developers, you can disable "back"/"forward" only. To disable it use:

Code: Select all

pdfViewer.SetProperty("Commands["GoBack"].State", "offline", 0);
pdfViewer.SetProperty("Commands["GoForward"].State", "offline", 0);

I don't get it to work. If I close the active document and open another, the back button is still active.
Also I tried to disable the "GoBackDoc"/"GoForwardDoc" commands. Nothing changed.

What's wrong?

Best,
cew

[Vasyl - PDF-XChange]

Please use next method:

Code: Select all

// "Back"/"Forward"
pdfViewer.SetProperty("Commands[#32316].State", "offline", 0); // name - "GoBack"
pdfViewer.SetProperty("Commands[#32317].State", "offline", 0); // name - "GoForward"
// "Previous View"/"Next View"
pdfViewer.SetProperty("Commands[#32890].State", "offline", 0); // name - "GoBack"
pdfViewer.SetProperty("Commands[#32891].State", "offline", 0); // name - "GoForward"

As you see the two pairs of UI-commands have a the same names and the code:

Code: Select all

pdfViewer.SetProperty("Commands["GoBack"].State", "offline", 0);
pdfViewer.SetProperty("Commands["GoForward"].State", "offline", 0);

-changes state of "Previous View"/"Next View" pair only...

HTH.

[cew]

[...]
HTH.

Yes, TH!

Tank you!

Best,
cew

[John - Tracker Supp]

No 'Tank' you Cew

[cew]

No 'Tank' you Cew

Ooops!
Here it is: "h"


Best,
cew

[John - Tracker Supp]

thanks Cew - now I feel complete !