FPCN_PAINT

Syntax

FPCN_PAINT
 
typedef struct SFPCNPaint
{
    NMHDR hdr;
 
    // [in] Pointer to pixel buffer (DWORD per pixel)
    LPDWORD lpPixels;
 
} SFPCNPaint;

Description

The FPCN_PAINT notification is sent each time before the control paints its content. It provides direct access to the raw pixel buffer of the frame via lpPixels.

To receive this notification, create an F-IN-BOX window with one of the following:

FPCS_TRANSPARENT style (for child windows, use WS_CHILD).
WS_EX_LAYERED extended style (for popup windows).

This event is useful if you want to post-process frame data before it is rendered (for example, applying custom effects).

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 == lpNMHDR->code)
    {
        SFPCNPaint* pFPCNPaint = (SFPCNPaint*)lpNMHDR;
 
        // Access the pixel buffer directly
        LPDWORD lpPixels = pFPCNPaint->lpPixels;
 
        // Example: process pixels here
    }
}