From fa10618df65072c08423364858288746ce5eaccf Mon Sep 17 00:00:00 2001
From: Rokas Kupstys <19151258+rokups@users.noreply.github.com>
Date: Tue, 8 Dec 2020 15:31:18 +0200
Subject: [PATCH] Fix ID collisions in the demo (#157)

Several `CollapsingHeader()` use same label as `BeginPlot()`. This creates an ID collision, which confuses Dear ImGui testing engine. Added `##` in `CollapsingHeader()` label are included in ID calculation, but discarded when rendering. This gives affected `CollapsingHeader()` a different ID and solves ID collision.
---
 implot_demo.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/implot_demo.cpp b/implot_demo.cpp
index 042dabc..3908c42 100644
--- a/implot_demo.cpp
+++ b/implot_demo.cpp
@@ -286,7 +286,7 @@ void ShowDemoWindow(bool* p_open) {
         }
     }
     //-------------------------------------------------------------------------
-    if (ImGui::CollapsingHeader("Shaded Plots")) {
+    if (ImGui::CollapsingHeader("Shaded Plots##")) {
         static float xs[1001], ys[1001], ys1[1001], ys2[1001], ys3[1001], ys4[1001];
         srand(0);
         for (int i = 0; i < 1001; ++i) {
@@ -419,7 +419,7 @@ void ShowDemoWindow(bool* p_open) {
             ImPlot::EndPlot();
         }
     }
-    if (ImGui::CollapsingHeader("Stem Plots")) {
+    if (ImGui::CollapsingHeader("Stem Plots##")) {
         static double xs[51], ys1[51], ys2[51];
         for (int i = 0; i < 51; ++i) {
             xs[i] = i * 0.02;
@@ -1239,7 +1239,7 @@ void ShowDemoWindow(bool* p_open) {
         }
     }
     //-------------------------------------------------------------------------
-    if (ImGui::CollapsingHeader("Custom Ticks")) {
+    if (ImGui::CollapsingHeader("Custom Ticks##")) {
         static bool custom_ticks  = true;
         static bool custom_labels = true;
         ImGui::Checkbox("Show Custom Ticks", &custom_ticks);
@@ -1705,4 +1705,4 @@ void ShowBenchmarkTool() {
     }
 }
 
-}
\ No newline at end of file
+}