AtlAxAttachControl - An outgoing call cannot be made since the application is dispatching an input-syncronous call.

bfoo75

I'm at the end of my rope here... I've been bashing my head on my keyboard for the last week trying to figure out this issue. I'm trying to display a flash control on a DirectDraw surface and my call to AtlAxAttachControl fails - preventing the flash player from appearing within the control. Here's a stripped down version of my code:

#pragma once

#include <string>
#include <windows.h>
#include <exdisp.h>
#include <mshtmlc.h>

#include <atlbase.h>
#include <atlcom.h>
#include <atlwin.h>

using std::string;

#import "PROGID:ShockwaveFlash.ShockwaveFlash" no_namespace raw_interfaces_only

typedef HRESULT (WINAPI *LPAtlAxWinInit) ();
typedef HRESULT (WINAPI *LPAtlAxGetControl)(HWND hwnd, IUnknown** unk);

class FlashViewer
{
public:
FlashViewer();
~FlashViewer();

bool Init(int Width, int Height);

void OpenFlash(const char\* filename);

void DrawToSurface(LPDIRECTDRAWSURFACE7 lpdds);

private:
int mViewerWidth;
int mViewerHeight;

HWND mViewerWnd;
IShockwaveFlash\* mFlashCtrl;

};

FlashViewer::FlashViewer()
{
mViewerWidth = 0;
mViewerHeight = 0;

mViewerWnd = 0;
mFlashCtrl = NULL;

}

FlashViewer::~FlashViewer()
{
DestroyWindow(this->mViewerWnd);
if (this->mFlashCtrl != NULL)
{
this->mFlashCtrl->Release();
this->mFlashCtrl = NULL;
}
}

bool FlashViewer::Init(int width, int height)
{
LPAtlAxWinInit AtlAxWinInit3 = (LPAtlAxWinInit)GetProcAddress(LoadLibrary("atl"), "AtlAxWinInit");
LPAtlAxGetControl AtlAxGetControl3 = (LPAtlAxGetControl)GetProcAddress(LoadLibrary("atl"), "AtlAxGetControl");

MSG msg;
HRESULT hr = AtlAxWinInit3();

HWND hwnd = CreateWindow("AtlAxWin", "", WS\_VISIBLE|WS\_POPUP, 0, 0, 1024, 768, 0, 0, 0, 0);

IShockwaveFlash\* flash = 0;

hr = CoCreateInstance(\_\_uuidof(ShockwaveFlash), 0, CLSCTX\_ALL, \_\_uuidof(IShockwaveFlash), (void \*\*)&flash);
hr = flash->put\_WMode(L"transparent");
hr = flash->put\_Loop(true);

hr = AtlAxAttachControl(flash, hwnd, NULL);
hr = flash->put\_Movie(L"c:\\\\FrontEnd.swf");

long pVal = -1;
flash->get\_ReadyState(&pVal);

return true;

}

void FlashViewer::OpenFlash(const char *filename)
{
this->mFlashCtrl->LoadMovie(0, _bstr_t(filename));
}

void FlashViewer::DrawToSurface(LPDIRECTDRAWSURFACE7 lpdds)
{
if (this->mViewerWnd == NULL)
return;
RECT rect = {0, 0, this->mViewerWidth, this->mViewerHeight};
HDC hdcSurface;
HRESULT hr = lpdds->GetDC(&am