33 lines
809 B
C#
33 lines
809 B
C#
using System;
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using System.Windows;
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namespace Microsoft.Research.DynamicDataDisplay.Navigation
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{
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/// <summary>Helper class to parse Windows messages</summary>
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internal static class MessagesHelper {
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internal static int GetXFromLParam(IntPtr lParam) {
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return LOWORD(lParam.ToInt32());
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}
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internal static int GetYFromLParam(IntPtr lParam) {
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return HIWORD(lParam.ToInt32());
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}
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internal static Point GetMousePosFromLParam(IntPtr lParam) {
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return new Point(GetXFromLParam(lParam), GetYFromLParam(lParam));
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}
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internal static int GetWheelDataFromWParam(IntPtr wParam) {
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return HIWORD(wParam.ToInt32());
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}
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internal static short HIWORD(int i) {
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return (short)((i & 0xFFFF0000) >> 16);
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}
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internal static short LOWORD(int i) {
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return (short)(i & 0x0000FFFF);
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}
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}
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}
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