没有Aero Glass的DwmExtendFrameIntoClientArea

Question

使用DwmExtendFrameIntoClientArea启用Aero Glass 的API调用可以正常工作.但是,我希望它也可以在Aero Glass被禁用时工作,就像它在Windows控制面板中的工作方式一样:

注意框架是如何扩展到客户区的,即使Aero Glass被禁用了？当我DwmExtendFrameIntoClientArea在我的应用程序中进行API调用时,返回的HRESULT肯定不成功,我的应用程序最终看起来像这样:

http://img197.imageshack.us/img197/9629/clientapplication.png

通常,启用Aero Glass后,边框会向下延伸到导航按钮下方,就像在控制面板中一样.我该怎么做呢？DwmExtendFrameIntoClientArea显然不起作用.

顺便说一句,如果它是相关的,我的应用程序是一个WPF应用程序.

Answer 1

尼尔的回答是正确的; 当组合被禁用时,你必须自己绘制该区域.

我可以向我展示我在表单顶部的面板的绘制处理程序中的代码 - 通常负责绘制0x00000000透明黑色以使玻璃显示的面板:

伪代码:

procedure DrawGlassHeaderArea(g: Graphics; r: Rectangle; IsFormFocused: Boolean);
const
   clFakeGlassColor = $00EAD1B9;  //(185, 209, 234) This is the fake foreground glass color (for use when composition is disabled)
   clFakeGlassColorUnfocused = $00F2E4D7; //(215, 228, 242) This is the fake background glass color (for use when composition is disabled)
begin
   if Dwm.IsCompositionEnabled then
   begin
      g.FillRectangle(r, 0x00000000); //fill rectangle with transparent black
   end
   else
      //Composition disabled; fake it like Microsoft does

      //The color to use depends if the form has focused or not
      Color glassColor;
      if (IsFormFocused) then
         c = clFakeGlassColor 
      else
         c = clFakeGlassColorUnfocused;

      g.FillRectangle(r, glassColor); //fill rectangle with fake color


      //Now we have to draw the two accent lines along the bottom
      Color edgeHighlight = ColorBlend(Colors.White, glassColor, 0.33); //mix 33% of glass color to white
      Color edgeShadow = ColorBlend(Colors.Black, glassColor, 0.33); //mix 33% of glass color to black

      //Draw highlight as 2nd-last row:
      g.DrawLine(edgeHighlight, Point(r.Left, r.Bottom-2), Point(r.Right, r.Bottom-2);

      //Draw shadow on the very last row:
      g.DrawLine(edgeHighlight, Point(r.Left, r.Bottom-1), Point(r.Right, r.Bottom-1);
   end;
end;

样品用法

procedure MyForm.PaintBox1Paint(PaintEventArgs e)
begin
   DrawGlassHeaderArea(e.Graphics, PaintBox1.ClientRectangle, this.HasFocus); 
end;

奖金截图

2014年7月9日更新

@JakePetroules是对的,我错了.用于假玻璃的"蓝色" 不是硬编码到Windows中.它是利用访问GetThemeColor.

我编写了TMT_COLOR可用于Window类的所有可用颜色():

注意:有关类,部件和状态的详细信息,请参阅Aero样式类,部件和状态

使用时:

• 课程:Window
• 部分:WP_CAPTION
• 状态:不适用(StateID不用于Caption部分,也不用于整个Window类)

并获取颜色代码propertyID:

• TMT_FILLCOLORHINT:当窗口具有焦点时
• TMT_BORDERCOLORHINT:当窗口没有焦点时

你得到两个重要的颜色:

我现在使用伪代码来获取假玻璃颜色:

public Color GetFakeClassColor(Boolean isWindowFocused=true)
{
   static Color fakeGlass= 0x00B8D0E9; //the correct answer anyway

   if ((GetThemeAppProperties() && STAP_ALLOW_CONTROLS) == 0)
      return fakeGlass;

   hTheme = OpenThemeData(GetDesktopWindow(), "Window");
   if (hTheme = 0)
      return fakeGlass;

   Int32 propID;
   if (isWindowFocused)
       propID= TMT_FILLCOLORHINT; //The color used as a fill color hint for custom controls.
   else
       propID= TMT_BORDERCOLORHINT; //The color used as a border color hint for custom controls.

   DWORD rgb;
   if (Failed(GetThemeColor(hTheme, WP_CAPTION, 0, propID, ref rgb))
      return fakeGlass;

   Result = new Color(rgb);
}

实际上,因为我使用Delphi,我的实际代码是:

function GetFakeGlassColor(IsWindowFocused: Boolean=True): TColor;
var
    ted: TThemedElement;
    hTheme: THandle;
    propID: Integer;
    rgb: DWORD;
begin
    Result := $00B8D0E9; //the correct answer anyway

    //We can't use the ThemeServcies.ThemesEnabled, as that mistakenly checks for version 6 of the common controls library
    //Themes can be enabled without using ComCtl V6, or common controls at all
    if not ThemeServices.ThemesAvailable then
        Exit;
    if (GetThemeAppProperties and STAP_ALLOW_CONTROLS) = 0 then
        Exit;

    htheme := ThemeServices.Theme[teWindow];
    if hTheme = 0 then
        Exit;

    if IsWindowFocused then
        propID := TMT_FILLCOLORHINT //The color used as a fill color hint for custom controls.
    else
        propID := TMT_BORDERCOLORHINT; //The color used as a border color hint for custom controls.

    if Failed(GetThemeColor(hTheme, WP_CAPTION, 0, propID, {var}rgb)) then
        Exit;

    Result := rgb;
end;

Answer 2

你必须把它画成你自己的框架。

您必须使用DwmIsCompositionEnabled检查 DWM 是否启用并处理WM_DWMCOMPOSITIONCHANGED来检测 DWM 状态更改。

然后你必须以单独的方式绘制窗口，如果启用了 DWM，则使用DwmExtendFrameIntoClientArea，如果禁用，则自己绘制“框架”。

我不知道如何在 WPF 中复制 Aero 框架（在我的应用程序中，我有自己的配色方案，并且没有使用 Auro 框架）。

这很烦人，但是当 DWM 被禁用时，系统会回退到 XP 样式绘图，并且 DWM 的任何服务都不起作用 - 即使是那些与玻璃效果无关的服务。