• Prudence (18/18) Sep 08 2015 I have
• Rikki Cattermole (9/25) Sep 08 2015 You have the ability to store some user info along with the pointer.

"Prudence" <Pursuit Happyness.All> writes:

I have

hook = SetWindowsHookEx(WH_MOUSE, &Proc, NULL, ThreadID);	

Proc is the standard hook proc:

public extern (Windows) LRESULT Proc(int code, WPARAM wParam, 
LPARAM lParam)

I get a type mismatch because Proc is a delegate and 
SetWindowsHookEx expects a function. Making proc static works but 
not the behavior I want since all this stuff is wrapped in a 
class.

Is there any way to pass Proc to SetWindowsHookEx without issues 
of GB and such?



Error: function windows.winuser.SetWindowsHookExA (int, extern 
(Windows) int function(int, uint, int), void*, uint) is not 
callable using argument types (const(int), extern (Windows) int 
delegate(int code, uint wParam, int lParam), void*, uint)		

I could cast Proc to a function, obviously, but I'll loose the 
delegate behavior and create problems when I try to use this 
inside Proc?

Rikki Cattermole <alphaglosined gmail.com> writes:

On 09/09/15 12:18 PM, Prudence wrote:
 I have

 hook = SetWindowsHookEx(WH_MOUSE, &Proc, NULL, ThreadID);

 Proc is the standard hook proc:

 public extern (Windows) LRESULT Proc(int code, WPARAM wParam, LPARAM
 lParam)

 I get a type mismatch because Proc is a delegate and SetWindowsHookEx
 expects a function. Making proc static works but not the behavior I want
 since all this stuff is wrapped in a class.

 Is there any way to pass Proc to SetWindowsHookEx without issues of GB
 and such?



 Error: function windows.winuser.SetWindowsHookExA (int, extern (Windows)
 int function(int, uint, int), void*, uint) is not callable using
 argument types (const(int), extern (Windows) int delegate(int code, uint
 wParam, int lParam), void*, uint)

 I could cast Proc to a function, obviously, but I'll loose the delegate
 behavior and create problems when I try to use this inside Proc?

You have the ability to store some user info along with the pointer. 
Store an integer. Use a global (private) array to map the integer to the 
actual delegate. Use a free function as the proc function.

Of course, that has some indirection thats to the lookup. You could if 
able to rewrite as the free-function and pass in the class as user data, 
you could be smart about it ;)

https://github.com/Devisualization/window/blob/master/platforms/win32/devisualization/window/window.d#L384
https://github.com/Devisualization/window/blob/master/platforms/win32/devisualization/window/window.d#L401