Demo: Fixed bounds of DragFloat in Clipping section to avoid passing zero-sized to InvisibleButton().

imgui_demo.cpp

@@ -1988,7 +1988,7 @@ static void ShowDemoWindowLayout()
     {
         static ImVec2 size(100, 100), offset(50, 20);
         ImGui::TextWrapped("On a per-widget basis we are occasionally clipping text CPU-side if it won't fit in its frame. Otherwise we are doing coarser clipping + passing a scissor rectangle to the renderer. The system is designed to try minimizing both execution and CPU/GPU rendering cost.");
-        ImGui::DragFloat2("size", (float*)&size, 0.5f, 0.0f, 200.0f, "%.0f");
+        ImGui::DragFloat2("size", (float*)&size, 0.5f, 1.0f, 200.0f, "%.0f");
         ImGui::TextWrapped("(Click and drag)");
         ImVec2 pos = ImGui::GetCursorScreenPos();
         ImVec4 clip_rect(pos.x, pos.y, pos.x + size.x, pos.y + size.y);