c++ - 使用 avicap.dll 打开设置

Question

我正在使用 avicap.dll，我想打开相机的设置。我的代码是:

mCapHwnd = capCreateCaptureWindowA(
             "WebCap1", 536870912, 0, 0, m_Width, m_Height, 0, 0);
int i = SendMessage(mCapHwnd, 1034, 0, 0);
int j = SendMessage(mCapHwnd, 1066, 0, 1);

但是，高级选项卡打开了。

我希望在加载时打开源设置。如何做到这一点？

Answer 1

您所知道的 1066 实际上是 WM_CAP_DLG_VIDEOSOURCE。所以你基本上是在做 the following :

The WM_CAP_DLG_VIDEOSOURCE message displays a dialog box in which the user can control the video source. The Video Source dialog box might contain controls that select input sources; alter the hue, contrast, brightness of the image; and modify the video quality before digitizing the images into the frame buffer. You can send this message explicitly or by using the capDlgVideoSource macro.

这将打开与捕获设备关联的四个可能对话框之一，阅读 MSDN 上的其他三个，WM_CAP_DLG_* 消息:Displaying Dialog Boxes to Set Video Characteristics .