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When developping a Swing client, I face the following problem :

When setting the hand cursor on Windows, I noticed that the default system cursor was not used.

I analysed the problem and found the rrot cause.

I also made a correction and tested it on Windows 7.

This is my analyse :

When reading Java source code, it is obvious that on Windows, Java does not use System resources.

In the code (from jdk\\src\\windows\\native\\sun\\windows\\awt\_Cursor.cpp�) bellow :

AwtCursor \* AwtCursor::CreateSystemCursor(jobject jCursor)

{

��� JNIEnv \*env = (JNIEnv \*)JNU\_GetEnv(jvm, JNI\_VERSION\_1\_2);

�

��� jint type = env->GetIntField(jCursor, AwtCursor::typeID);

��� DASSERT(type != java\_awt\_Cursor\_CUSTOM\_CURSOR);

�

��� LPCTSTR winCursor;

��� switch (type) {

����� case java\_awt\_Cursor\_DEFAULT\_CURSOR:

����� default:

������� winCursor = IDC\_ARROW;

������� break;

����� case java\_awt\_Cursor\_CROSSHAIR\_CURSOR:

������� winCursor = IDC\_CROSS;

������� break;

\[�\]

����� case java\_awt\_Cursor\_HAND\_CURSOR:

������� winCursor = TEXT("HAND\_CURSOR");

������� break;

����� case java\_awt\_Cursor\_MOVE\_CURSOR:

������� winCursor = IDC\_SIZEALL;

������� break;

��� }

��� HCURSOR hCursor = ::LoadCursor(NULL, winCursor);

��� if (hCursor \== NULL) {

������� /\* Not a system cursor, check for resource. \*/

������� hCursor = ::LoadCursor(AwtToolkit::GetInstance().GetModuleHandle(),

������������������������������ winCursor);

��� }

��� if (hCursor == NULL) {

������� hCursor = ::LoadCursor(NULL, IDC\_ARROW);

������� DASSERT(hCursor != NULL);

��� }

�

��� AwtCursor \*awtCursor = new AwtCursor(env, hCursor, jCursor);

��� setPData(jCursor, ptr\_to\_jlong(awtCursor));

�

��� return awtCursor;

}

�

In the case of the HAND\_CURSOR (in red), �Java will try to load the cursor from the system (in blue).

If it fails (hCursor == NULL) then it will try to load the cursor from its own resource (in orange) :

hCursor = ::LoadCursor(AwtToolkit::GetInstance().GetModuleHandle(),

������������������������������ winCursor);

�

In our case, if we check in the AWTToolkit module resources, in jdk\\src\\windows\\native\\sun\\windows\\awr.rc, we find the following content :

#include "windows.h"

�

// Need 2 defines so macro argument to XSTR will get expanded before quoting.

#define XSTR(x) STR(x)

#define STR(x)� #x

�

LANGUAGE LANG\_NEUTRAL, SUBLANG\_NEUTRAL

�

HAND\_CURSOR� CURSOR� DISCARDABLE "hand.cur"

AWT\_ICON���� ICON��� DISCARDABLE "awt.ico"

CHECK\_BITMAP BITMAP� DISCARDABLE "check.bmp"

�

And we find that java.exe embed its own hand cursor, in jdk\\src\\windows\\native\\sun\\windows\\hand.cur : The �famous� hand that it is displayed instead of our system cursor.