Restoring the Cursor

Hi all,

Can somebody suggest me, how after having used the SetSystemCursor() to change a default cursor, can I get the original cursor back?

Code:

---

hblank = CreateCursor( NULL, 0, 0, 32, 32, AndMask, XorMask );
hblanktemp = CopyCursor(hblank);
SetSystemCursor(hblanktemp,OCR_NORMAL);

---

Here, I am over writting the arrow cursor with a custom made 'blank' cursor. Now what can I do to restore the arrow cursor?

You'll need to save the original.
LoadCursor

gg

The funny thing about LoadCursor is that it actually acquires the 'handle' of the cursor. So if you manage to change the cursor itself using SetSystemCursor(), then there is no way you can get it back.
Infact i tried a new technique by using GetIconInfo() to capture entire information of the cursor and then restoring it back using SetSystemcursor.
But now I face a new problem.
It cannot restore animated cursors

Have you tried making a copy of the original?
CopyCursor

http://msdn.microsoft.com/library/de...es/cursors.asp

gg

Yes, I did use CopyCursor, as it is stated in MSDN that SetSystemCursor deletes the handle of the source. But even that didn't work (surprisingly!). That is how I came to this conclusion that copycursor only takes a copy of the handle (something like taking a copy of a pointer and not the actualy data).

Works fine for me on my Win2K box...

Code:

---

#define OEMRESOURCE
#include <windows.h>

#include <iostream>
#include <cassert>
using namespace std;

int main()
{
    // load a copy of the wait cursor
    HCURSOR hcWait = LoadCursor(0, IDC_WAIT);
    assert(hcWait);
    HCURSOR hcWaitCopy = CopyCursor(hcWait);   
    assert(hcWaitCopy);

    // load a copy of the arrow cursor (so we can restore it)
    HCURSOR hcArrow = LoadCursor(0, IDC_ARROW);
    assert(hcArrow);
    HCURSOR hcArrowCopy = CopyCursor(hcArrow);   
    assert(hcArrowCopy);

    // make the system arrow cursor the wait cursor
    // NOTE: IDC_ARROW == MAKEINTRESOURCE(OCR_NORMAL)
    cout << "Changing normal cursor to wait cursor" << endl;
    BOOL ret = SetSystemCursor(hcWaitCopy, OCR_NORMAL);
    assert(ret);

    // sleep for a while so the user can play with the cursor
    cout << "Sleeping for 15 seconds" << endl;
    Sleep(15 * 1000);

    // restore the arrow cursor
    ret = SetSystemCursor(hcArrowCopy, OCR_NORMAL);
    assert(ret);

    DestroyCursor(hcWait);
    DestroyCursor(hcArrow);

    cout << "Cursors restored, sleeping for 10 seconds" << endl;
    Sleep(10 * 1000);

    cout << "Done" << endl;

    return 0;
}//main

---

gg

hmm...it works fine. Will try it out in my code... although my method also gives the same results.
But there was something I was really hoping that this code would be able do....to restore an animated cursor, but it doesn't :(
I use the 'Variations (system scheme)' theme of cursors and noticed that the animations in the arrow cursor was not restored.

When in doubt - go back and read the manual...

Quote:

---

Originally Posted by MSDN

Do not use the CopyCursor function for animated cursors. Instead, use the CopyImage function.

---

But that's not all.......On my Win2K box, I could not load an animated cursor using the OCR_xxx constants. Didn't matter if I used LoadCursor() or LoadImage().

It looks like the only way to get a handle to an animated cursor is to load it from file. You can get the path to the the system cursor files by looking in the registry under: "HKCU\Control Panel\Cursors\"

gg

You can try this code - it may work as expected under XP:

Code:

---

#define OEMRESOURCE
#include <windows.h>

#include <iostream>
#include <cassert>
using namespace std;


HANDLE LoadNoShareCursor(UINT ocr_id)
{
    HANDLE tmp = LoadImage(0, MAKEINTRESOURCE(ocr_id), IMAGE_CURSOR,
                          0, 0, LR_SHARED);
    if (!tmp)
        return 0;

    return CopyImage(tmp, IMAGE_CURSOR, 0, 0, 0);
}//LoadNoShareCursor


int main()
{
    HANDLE hWait = LoadNoShareCursor(OCR_WAIT);
    assert(hWait);

    HANDLE hArrow = LoadNoShareCursor(OCR_NORMAL);
    assert(hArrow);
   
    cout << "Changing normal cursor to wait cursor" << endl;
    BOOL ret = SetSystemCursor((HCURSOR)hWait, OCR_NORMAL);
    assert(ret);

    // sleep for a while so the user can play with the cursor
    cout << "Sleeping for 15 seconds" << endl;
    Sleep(15 * 1000);

    // restore the arrow cursor
    ret = SetSystemCursor((HCURSOR)hArrow, OCR_NORMAL);
    assert(ret);

    cout << "Cursors restored, sleeping for 10 seconds" << endl;
    Sleep(10 * 1000);

    cout << "Done" << endl;

    return 0;
}//main

---

gg