How to change a cursor.

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Hello, guys, I do not know how to switch between two cursors under Win64.

What I have tried:

Under Win32 I used such code to switch between two cursors:

void ChangeCursor(bool bc) {
if(!bc)
SetClassLong(m_hWnd, GCL_HCURSOR, (LONG)m_hArr);
else
SetClassLong(m_hWnd, GCL_HCURSOR, (LONG)m_hHnd);
}
but Win64 compiler does not accept it (It dislikes GCL_HCURSOR)

Posted 17-Mar-20 21:18pm

Member 14105155

Updated 17-Mar-20 22:27pm

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Richard MacCutchan · Answer 1 · 2020-03-17T22:28:00

Solution 1

Quote:
It dislikes GCL_HCURSOR

What is the exact error message roduced by the compiler? According to SetClassLongA function (winuser.h) - Win32 apps | Microsoft Docs[^], that is still a valid option. Alternatively you could use SetClassLongPtrW function (winuser.h) - Win32 apps | Microsoft Docs[^] with GCLP_HCURSOR.

Posted 17-Mar-20 22:28pm

Richard MacCutchan

Comments

Member 14105155 18-Mar-20 7:39am

Thank you, GCLP_HCURSOR was accepted.

Richard MacCutchan 18-Mar-20 7:46am

It's amazing what you can discover by reading the documentation.

Shao Voon Wong 19-Mar-20 3:23am

Thank you! Learn something useful from you, 5 stars from a fellow WinAPI and MFC developer.

Richard MacCutchan 19-Mar-20 3:39am

Like I said, it's the documentation that has the answers, not me.

Member 14105155 19-Mar-20 6:05am

My Visual Studio 2015 has no MSDN. To find an answer I have to use Internet. Normally when I'm working I'm doing it offline.

Richard MacCutchan 19-Mar-20 6:06am

That is exactly what I have to do.

Member 14105155 19-Mar-20 6:47am

MSDN is too heavy for me to download. I have 12 GB per month. Currently I'm trying to understand, what is better- to switch cursor or to use right mouse button instead.

Richard MacCutchan 19-Mar-20 7:06am

You do not need to download anything. Look at the link I gave you, it is the online documentation. All you need to do is use the correct search keyword, or the left hand index.

Member 14105155 19-Mar-20 17:24pm

Of course I know how to use online help. Simple strike <f1> an you are in. But, as I wrote to you, normally I work offline. I do not have enough much traffic. The next issue to be resolved is Assembler in Win64. I have some assembler code, that I use in Win32 programs. But the compiler of Visual Studio 2015 doesn't let one to use inline assembler code.

Richard MacCutchan 20-Mar-20 3:40am

I was not talking about using it within Visual Studio, but searching from your internet browser, which is much faster.

I have no idea what your issue is with inline assembly, I suggest you open a new question with the details.