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Replace BUILD_FOR_WINDOWS with a runtime check

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Mono runs the same executable, so #if isn't useful.
This commit is contained in:
Andy McFadden 2018-10-01 10:44:24 -07:00
parent 60aa252352
commit 62ebe4176f
3 changed files with 37 additions and 19 deletions
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4
CommonWinForms/CommonWinForms.csproj
View File

@ -18,7 +18,7 @@
<DebugType>full</DebugType>
<Optimize>false</Optimize>
<OutputPath>bin\Debug\</OutputPath>
<DefineConstants>TRACE;DEBUG;BUILD_FOR_WINDOWS</DefineConstants>
<DefineConstants>TRACE;DEBUG</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>
</PropertyGroup>
@ -26,7 +26,7 @@
<DebugType>pdbonly</DebugType>
<Optimize>true</Optimize>
<OutputPath>bin\Release\</OutputPath>
<DefineConstants>TRACE;BUILD_FOR_WINDOWS</DefineConstants>
<DefineConstants>TRACE</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>
</PropertyGroup>

2
CommonWinForms/NativeMethods.cs
View File

@ -17,7 +17,6 @@ using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;
#if BUILD_FOR_WINDOWS // I don't know if other platforms will emulate the LVITEM stuff
namespace CommonWinForms {
// From https://stackoverflow.com/questions/1019388/
@ -82,4 +81,3 @@ namespace CommonWinForms {
}
}
}
#endif //BUILD_FOR_WINDOWS

50
CommonWinForms/WinFormsExtensions.cs
View File

@ -37,6 +37,26 @@ namespace CommonWinForms {
/// Add functions to select and deselect all items.
/// </summary>
public static class ListViewExtensions {
// I don't know if NativeMethods is going to work on other platforms, but I assume
// not. I'm not sure how expensive the runtime check is, so cache the result.
private enum DNY { Dunno = 0, No, Yes };
private static DNY IsPlatformWindows;
private static bool IsWindows {
get {
if (IsPlatformWindows == DNY.Dunno) {
// This is the .NET framework 4.6 way. Later versions (4.7, netcommon)
// prefer the RuntimeInformation.IsOSPlatform() approach.
OperatingSystem os = Environment.OSVersion;
if (os.Platform == PlatformID.Win32NT) {
IsPlatformWindows = DNY.Yes;
} else {
IsPlatformWindows = DNY.No;
}
}
return (IsPlatformWindows == DNY.Yes);
}
}
/// <summary>
/// Selects all items in the list view.
/// </summary>
@ -50,23 +70,23 @@ namespace CommonWinForms {
// https://stackoverflow.com/questions/9039989/
// https://stackoverflow.com/questions/1019388/
#if BUILD_FOR_WINDOWS // defined in our project properties
NativeMethods.SelectAllItems(listView);
#else
try {
Application.UseWaitCursor = true;
Cursor.Current = Cursors.WaitCursor;
listView.BeginUpdate();
int max = listView.VirtualListSize;
for (int i = 0; i < max; i++) {
//codeListView.Items[i].Selected = true;
listView.SelectedIndices.Add(i);
if (IsWindows) {
NativeMethods.SelectAllItems(listView);
} else {
try {
Application.UseWaitCursor = true;
Cursor.Current = Cursors.WaitCursor;
listView.BeginUpdate();
int max = listView.VirtualListSize;
for (int i = 0; i < max; i++) {
//codeListView.Items[i].Selected = true;
listView.SelectedIndices.Add(i);
}
} finally {
listView.EndUpdate();
Application.UseWaitCursor = false;
}
} finally {
listView.EndUpdate();
Application.UseWaitCursor = false;
}
#endif
}
/// <summary>