DwmExtendFrameIntoClientArea没有Aero玻璃

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问题描述

使用 DwmExtendFrameIntoClientArea API调用与Aero玻璃启用的作品就好了。不过，我想它的工作时，Aero玻璃被禁用，以及像它是如何工作在Windows控制面板：

Using the DwmExtendFrameIntoClientArea API call with Aero Glass enabled works just fine. However, I want it to work when Aero Glass is disabled as well, like how it works in the Windows control panel:

请注意框架已经扩展到客户区，尽管Aero玻璃被禁用？当我把我的应用程序的 DwmExtendFrameIntoClientArea API调用返回的HRESULT是绝对不会成功，我的应用程序最终看起来是这样的：

Notice how the frame has extended into the client area, even though Aero Glass is disabled? When I make the DwmExtendFrameIntoClientArea API call in my application, the returned HRESULT is definitely not success, and my application ends up looking like this:

通常情况下，用Aero玻璃启用，边界延伸到导航按钮下方，像中控面板。我该怎么做呢？ DwmExtendFrameIntoClientArea 显然是行不通的。

Normally, with Aero Glass enabled, the border stretches down to underneath the navigation buttons, like in the control panel. How do I do this? DwmExtendFrameIntoClientArea clearly isn't working.

顺便说一句，如果是相关的，我的应用程序是一个WPF应用程序。

By the way, if it is relevant, my application is a WPF application.

推荐答案

尼尔的答案是正确的;当成分被禁用，你必须自己绘制的区域。

Nir's answer is correct; when composition is disabled you have to draw that area yourself.

我可以告诉你的$ C $词已经在面板的我的窗体顶部的油漆处理程序 - 面板通常负责绘制00000000透明的黑色使玻璃出现：

i can show you the code i have in the paint handler of the panel at the top of my form - the panel normally responsible for drawing the 0x00000000 transparent black to make the glass appear:

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;

的使用示例

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

红利截图

Bonus Screenshot

@JakePetroules是对的，我错了。在蓝的用于假冒玻璃的不可以硬codeD到Windows。它的是访问使用的。

@JakePetroules was right, and i was wrong. The "blue" used for fake glass is not hard-coded into Windows. And it is accessible using GetThemeColor.

I codeD了所有可用的颜色（ TMT_COLOR ）可用于窗口类：

I coded up all the available colors (TMT_COLOR) available for a Window class:

注意：有关类，部件的详细信息，以及各国，看到的

在使用：

类：窗口
第： WP_CAPTION
国家： N / A（STATEID不用于在标题的一部分，也不是所有的窗口班）

Class: Window
Part: WP_CAPTION
State: n/a (StateID is not used for the Caption part, nor the entire Window class)

和取色code 属性ID

TMT_FILLCOLORHINT ：因为当窗口集中
TMT_BORDERCOLORHINT ：为当窗口没有焦点

你得到的两个重要的颜色：

you get the two important colors:

伪$ C $词现在用它来获得假的玻璃颜色：

The pseudo-code i now use to get the fake glass color:

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);
}

在现实中，由于我使用德尔福，我的实际code是：

In reality, since i use Delp my actual code is:

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;

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