WinQueryWindowThunkProc: Difference between revisions

Latest revision as of 20:43, 27 November 2023

This function queries the pointer-conversion procedure associated with a window.

WinQueryWindowThunkProc(hwnd)

thunkpr (PFN) - returns

Pointer-conversion procedure identifier.

NULL: No pointer-conversion procedure is associated with this window.
Other: Identifier of the pointer-conversion procedure associated with this window.

This example shows how to get pointer conversion procedure associated with the frame window.

#define INCL_WINTHUNKAPI
#include <os2.h>

HWND hwndFrame;
PFN  pthnkproc;

pthnkproc = WinQueryWindowThunkProc(hwndFrame);

@@ Line 1: / Line 1: @@
 This function queries the pointer-conversion procedure associated with a window.
 ==Syntax==
@@ Line 5: / Line 5: @@
 ==Parameters==
-;hwnd (HWND) - input
+;hwnd (HWND) - input:Window handle.
-:Window handle.
 ==Returns==
-;thunkpr (PFN) - returns
+;thunkpr (PFN) - returns:Pointer-conversion procedure identifier.
-:Pointer-conversion procedure identifier.
+:;NULL:No pointer-conversion procedure is associated with this window.
-:;NULL
+:;Other:Identifier of the pointer-conversion procedure associated with this window.
-::No pointer-conversion procedure is associated with this window.
-:;Other
-::Identifier of the pointer-conversion procedure associated with this window.
 ==Example Code==
@@ Line 19: / Line 16: @@
 <pre>
 #define INCL_WINTHUNKAPI
-#include <OS2.H>
+#include <os2.h>
 HWND hwndFrame;
@@ Line 25: / Line 22: @@
 pthnkproc = WinQueryWindowThunkProc(hwndFrame);
-</pre>
-Definition
-<pre>
-#define INCL_WINTHUNKAPI /* Or use INCL_WIN, INCL_PM, */
-#include <os2.h>
-HWND    hwnd;     /*  Window handle. */
-PFN     thunkpr;  /*  Pointer-conversion procedure identifier. */
-thunkpr = WinQueryWindowThunkProc(hwnd);
 </pre>
@@ Line 44: / Line 29: @@
 * [[WinSetClassThunkProc]]
 * [[WinSetWindowThunkProc]]
 [[Category:Win]]