尝试通过jni调用从java更改Windows鼠标光标图标 [英] Trying to change Windows mouse cursor icon from java through jni call

问题描述

在我的java应用程序，我试图改变鼠标光标与一个透明的argb 32位bmp文件。

In my java application, i m trying to change the mouse cursor with an argb 32bit bmp file with transparency.

我想做一个jni调用来改变它Windows因为改变java中的游标给我一个非常糟糕的鼠标光标（所有的透明度是0x00或0xFF）

I want to make a jni call to change it from Windows because changing the cursor in java gives me a really bad mouse cursor (all the transparency is either 0x00 or 0xFF)

目前我试图使用函数SetClassLong作为参数：

At the moment i'm trying to use the function SetClassLong with as parameters:

• 来自java的hWnd（我得到它的方法 http://download.oracle.com/javase/1.3/docs/guide/awt/AWT_Native_Interface.html ）


• GCL_HCURSOR


• 和由原始argb 32位bmp缓冲区建立的游标

• the hWnd from java (i got it following that method http://download.oracle.com/javase/1.3/docs/guide/awt/AWT_Native_Interface.html )
• GCL_HCURSOR
• and a cursor made from a raw argb 32bit bmp buffer

这段代码在一个示例win32 atl windows测试程序中工作：

That piece of code works in a sample win32 atl windows test program:

HBITMAP hBitmap = (HBITMAP)CreateBitmap(32, 32, 1, 32, pRawBmpData); 
BITMAP bmp;
::GetObject(hBitmap, sizeof(BITMAP), &bmp);

HBITMAP hMask = ::CreateCompatibleBitmap(::GetDC(NULL), bmp.bmWidth, bmp.bmHeight);

ICONINFO ii = {0};
ii.fIcon = FALSE;
ii.hbmColor = hBitmap;
ii.hbmMask = hMask;
ii.xHotspot = 0;
ii.yHotspot = 0;

HCURSOR cursor = ::CreateIconIndirect(&ii);

SetCursor(cursor);
SetClassLong(hWnd, GCL_HCURSOR, (DWORD)cursor);

但不是从java到jni调用的dll

But not in a dll called from java through jni

如果有人有更好的方法或解决方案，感谢

If somebody has a better approach or solution to this case, thanks

干杯

推荐答案

有什么你想做的是不可能的 java.awt.Cursor ？

Was there something you wanted to do that was not possible with java.awt.Cursor?

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