Creating my own button

I have created 4 ownerdraw buttons as child windows and I am trying to display a bitmap on the buttons.

I believe the correct way of doing this is to use the SendMessage function with the message BM_SETIMAGE. On MSDN it is given as this:

Code:

To send this message, call the SendMessage function as follows. 

lResult = SendMessage(      (HWND) hWndControl,           (UINT) BM_SETIMAGE,      (WPARAM) wParam,          (LPARAM) lParam      );  

Parameters:

wParam
Specifies the type of image to associate with the button. This parameter can be one of the following values: 
IMAGE_BITMAP
IMAGE_ICON

lParam
Handle to the image to associate with the button.

I have entered IMAGE_BITMAP in as the third argument and as the fourth argument I have used the handle to my bitmap. The problem is that it won't compile stating that the fourth argument should be a long. I tried type casting this argument and it compiled but did not display the bitmap. I believe my method of creating the handle to the bitmap is correct as I have used it elsewhere successfully. Am I doing anything wrong with regards to the use of the SendMessage function?

Did you cast it to (LPARAM)?