FPCN_PAINT_STAGE

Syntax

FPCN_PAINT_STAGE
 
#define DEF_F_IN_BOX__PREPAINT_STAGE   (0)
#define DEF_F_IN_BOX__AFTERPAINT_STAGE (1)
 
typedef struct SFPCNPaintStage
{
   NMHDR hdr;
 
   DWORD dwStage; // DEF_F_IN_BOX__*
   HDC hdc;
 
} SFPCNPaintStage;

Description

The FPCN_PAINT_STAGE notification is sent when an F-IN-BOX window is created with the FPCS_TRANSPARENT style.

It is triggered at two stages of the painting process:

DEF_F_IN_BOX__PREPAINT_STAGE — before the Flash content is painted (background stage).
DEF_F_IN_BOX__AFTERPAINT_STAGE — after the Flash content is painted (movie stage).

This allows developers to implement custom rendering and simulate transparency for a Flash window created as a child control.

Example

HWND hwnd_F_IN_BOX;
...
FPCSetEventListener(hwnd_F_IN_BOX, &EventListener, 0);
...
void WINAPI EventListener(HWND hwndFlashPlayerControl, LPARAM lParam, NMHDR* lpNMHDR)
{
    if (FPCN_PAINT_STAGE == lpNMHDR->code)
    {
        SFPCNPaintStage* info = (SFPCNPaintStage*)lpNMHDR;
 
        if (DEF_F_IN_BOX__PREPAINT_STAGE == info->dwStage)
        {
            RECT rc;
            ::GetClientRect(lpNMHDR->hwndFrom, &rc);
 
            // Fill background before Flash paints
            FillRect(info->hdc, &rc, GetSysColorBrush(COLOR_BTNFACE));
        }
    }
}