使用IDirect3DDevice9::SetDialogBoxMode()时怎么一直返回失败？

visualvisual

我想在DX全屏模式中显示windows的对话框，在网上看见需要调用IDirect3DDevice9::SetDialogBoxMode。但是我发现IDirect3DDevice9::SetDialogBoxMode(true)返回值一直是失败！

请高手指点。谢谢！

hflong240

If the method fails, the return value can be D3DERR_INVALIDCALL unless all of the following are true.

1.The application specified a back buffer format compatible with GDI, in other words, one of D3DFMT_X1R5G5B5, D3DFMT_R5G6B5, or D3DFMT_X8R8G8B8.
2.The application specified no multisampling.
3.The application specified D3DSWAPEFFECT_DISCARD.
4.The application specified D3DPRESENTFLAG_LOCKABLE_BACKBUFFER.
5.The application did not specify D3DCREATE_ADAPTERGROUP_DEVICE.
6.The application is not between BeginScene and EndScene.

符合以上6条才会成功。多看看文档吧。

visualvisual

谢谢！ 确实没好好看文档。