Inno Setup的位图WizardImageFile(和WizardSmallImageFile)看起来很糟糕,因为当Windows 7启用了大型系统字体时,向导比平常大,但图像缩放得很糟糕.
有修复吗？
BitmapImage1.AutoSize := True; BitmapImage1.Align := alClient; BitmapImage1.Left := 0; BitmapImage1.Top := 0; BitmapImage1.stretch := True; BitmapImage1.Parent := Splash;
解决方法
这些是位图图像,它们自然会严重缩放.你很幸运,你自己的图像在缩放时看起来并不那么糟糕.
您必须为常见的缩放因子准备自己的一组图像,并动态选择正确的缩放因子.在Inno Setup中没有本机支持.
目前使用的常见缩放因子是100％,125％,150％和200％.所以你应该有四种尺寸的图像.
您可以使用@L_404_0@和WizardSmallImageFile指令分配100％大小的图像,并在使用大缩放时使用Pascal脚本覆盖它.
说我有这些图像文件：
WizardImage 100.bmp WizardImage 125.bmp WizardImage 150.bmp WizardImage 200.bmp WizardSmallImage 100.bmp WizardSmallImage 125.bmp WizardSmallImage 150.bmp WizardSmallImage 200.bmp
[Setup]
; Use 100% images by default
WizardImageFile=WizardImage 100.bmp
WizardSmallImageFile=WizardSmallImage 100.bmp
[Files]
; Embed all other sizes to the installer
Source: "WizardImage *.bmp"; Excludes: "* 100.bmp"; Flags: dontcopy
Source: "WizardSmallImage *.bmp"; Excludes: "* 100.bmp"; Flags: dontcopy
[Code]
function GetScalingFactor: Integer;
begin
if WizardForm.Font.PixelsPerInch >= 192 then Result := 200
else
if WizardForm.Font.PixelsPerInch >= 144 then Result := 150
else
if WizardForm.Font.PixelsPerInch >= 120 then Result := 125
else Result := 100;
end;
procedure LoadEmbededScaledBitmap(Image: TBitmapImage; NameBase: string);
var
Name: String;
FileName: String;
begin
Name := Format('%s %d.bmp',[NameBase,GetScalingFactor]);
ExtractTemporaryFile(Name);
FileName := ExpandConstant('{tmp}\' + Name);
Image.Bitmap.LoadFromFile(FileName);
DeleteFile(FileName);
end;
procedure InitializeWizard;
begin
{ If using larger scaling,load the correct size of images }
if GetScalingFactor > 100 then
begin
LoadEmbededScaledBitmap(WizardForm.WizardBitmapImage,'WizardImage');
LoadEmbededScaledBitmap(WizardForm.WizardBitmapImage2,'WizardImage');
LoadEmbededScaledBitmap(WizardForm.WizardSmallBitmapImage,'WizardSmallImage');
end;
end;
您可能希望对SelectDirBitmapImage,SelectGroupBitmapImage和PreparingErrorBitmapImage执行相同的操作.
也可以看看：
> How to detect and “fix” DPI settings with Inno Setup?
> Inno Setup Placing image/control on custom page