HWnd

Type:

Remarks:

• The window handle can be used by another application or process for triggering events or sending messages to a Zorro window. The message WM_APP+1 triggers a price quote request, WM_APP+2 triggers a script-supplied callback function, and WM_APP+3 triggers a plugin-supplied callback function set by the GET_CALLBACK command.
• The window handle is automatically sent to broker plugins with the SET_HWND command.
• Window handles of other applications can be found with the FindWindow function (see example).

Example (run 2 Zorros with this script):

#include <windows.h>
#include <default.c>

long Handle1 = 0;

int click()
{
  if(Handle1)
    PostMessage(Handle1,WM_APP+2,0,0); // WM_APP+2 = trigger callback function
  else
    PostMessage(FindWindow(0,"Msg Test 2"),WM_APP+2,0,0);
}

void callback(void *Message)
{
   printf("\nMessage received!");
}

void main()
{
// use [Result] button for senging
  panelSet(-1,0,"Send",0,0,0);
  Handle1 = FindWindow(0,"Msg Test 1");
  if(1Handle1)
    print(TO_TITLE,"Msg Test 1");
  else
    print(TO_TITLE,"Msg Test 2");
  while(wait(1));
}

See also: