尼尔的回答是正确的;禁用合成时,您必须自己绘制该区域。
我可以向您展示我在表单顶部面板的油漆处理程序中拥有的代码 - 该面板通常负责绘制 0x00000000 透明黑色以使玻璃出现:
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;
示例使用
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”没有硬编码到 Windows 中。并且可以使用GetThemeColor
.
我对Window类可用的所有可用颜色 ( TMT_COLOR
) 进行了编码:
注意:有关类、部件和状态的更多信息,请参阅Aero 样式类、部件和状态
使用时:
- 类:
Window
- 部分:
WP_CAPTION
- State : n/a (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
: 当窗口有焦点时
TMT_BORDERCOLORHINT
: 当窗口没有焦点时
你会得到两种重要的颜色:
我现在用来获取假玻璃颜色的伪代码:
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,由于我使用的是 Delphi,所以我的实际代码是:
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;