我希望在我的WPF应用程序中禁用Aero Peek(当用户将鼠标放置在“显示桌面”按钮上时,我的应用程序必须可见)。我使用以下PInvoke签名:
[Flags]
public enum DwmWindowAttribute : uint
{
DWMWA_NCRENDERING_ENABLED = 1,
DWMWA_NCRENDERING_POLICY,
DWMWA_TRANSITIONS_FORCEDISABLED,
DWMWA_ALLOW_NCPAINT,
DWMWA_CAPTION_BUTTON_BOUNDS,
DWMWA_NONCLIENT_RTL_LAYOUT,
DWMWA_FORCE_ICONIC_REPRESENTATION,
DWMWA_FLIP3D_POLICY,
DWMWA_EXTENDED_FRAME_BOUNDS,
DWMWA_HAS_ICONIC_BITMAP,
DWMWA_DISALLOW_PEEK,
DWMWA_EXCLUDED_FROM_PEEK,
DWMWA_LAST
}
[Flags]
public enum DWMNCRenderingPolicy : uint
{
UseWindowStyle,
Disabled,
Enabled,
Last
}
[DllImport("dwmapi.dll", PreserveSig=false)]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool DwmIsCompositionEnabled();
[DllImport("dwmapi.dll", PreserveSig=false)]
public static extern Int32 DwmSetWindowAttribute(IntPtr hwnd,
DwmWindowAttribute dwmAttribute,
IntPtr pvAttribute,
uint cbAttribute);
还有这种用法:
var helper = new WindowInteropHelper(this);
helper.EnsureHandle();
if (API.DwmIsCompositionEnabled())
{
var status = Marshal.AllocCoTaskMem(sizeof(uint));
Marshal.Copy(new[] {(int) API.DWMNCRenderingPolicy.Enabled}, 0, status, 1);
API.DwmSetWindowAttribute(helper.Handle,
API.DwmWindowAttribute.DWMWA_EXCLUDED_FROM_PEEK,
status,
sizeof (uint));
}
在我的64位系统(Windows 7 Professional)中,只有运行64位应用程序时才能正常工作。如果我以WOW64模式运行32位应用程序,则会收到异常信息:
“调用PInvoke函数'XXX::DwmSetWindowAttribute'已经破坏了堆栈平衡。这可能是因为托管PInvoke签名与非托管目标签名不匹配。请检查PInvoke签名的调用约定和参数是否与目标非托管签名相匹配。”
你对此有何看法?该如何解决?