Tables: clarify TableNextRow() row_height and adjust demo to make this clearer (demo height were arbitrary and therefore misleading).

docs/CHANGELOG.txt

@@ -61,6 +61,9 @@ Other Changes:
     selects `VkSwapchainCreateInfoKHR`'s `compositeAlpha` value based on
     `cap.supportedCompositeAlpha`, which seems to be required on some Android
      devices. (#8784) [@FelixStach]
+- Examples:
+   - Win32+DirectX12: ignore seemingly incorrect D3D12_MESSAGE_ID_FENCE_ZERO_WAIT
+     warning on startups on some setups. (#9084, #9093) [@RT2Code, @LeoGautheron]
 
 
 -----------------------------------------------------------------------

imgui.h

@@ -897,7 +897,7 @@ namespace ImGui
     // - 5. Call EndTable()
     IMGUI_API bool          BeginTable(const char* str_id, int columns, ImGuiTableFlags flags = 0, const ImVec2& outer_size = ImVec2(0.0f, 0.0f), float inner_width = 0.0f);
     IMGUI_API void          EndTable();                                         // only call EndTable() if BeginTable() returns true!
-    IMGUI_API void          TableNextRow(ImGuiTableRowFlags row_flags = 0, float min_row_height = 0.0f); // append into the first cell of a new row.
+    IMGUI_API void          TableNextRow(ImGuiTableRowFlags row_flags = 0, float min_row_height = 0.0f); // append into the first cell of a new row. 'min_row_height' include the minimum top and bottom padding aka CellPadding.y * 2.0f.
     IMGUI_API bool          TableNextColumn();                                  // append into the next column (or first column of next row if currently in last column). Return true when column is visible.
     IMGUI_API bool          TableSetColumnIndex(int column_n);                  // append into the specified column. Return true when column is visible.
 

imgui_demo.cpp

@@ -6509,7 +6509,7 @@ static void DemoWindowTables()
             ImGui::TableNextColumn();
             ImGui::Text("A0 Row 0");
             {
-                float rows_height = TEXT_BASE_HEIGHT * 2;
+                float rows_height = (TEXT_BASE_HEIGHT * 2.0f) + (ImGui::GetStyle().CellPadding.y * 2.0f);
                 if (ImGui::BeginTable("table_nested2", 2, ImGuiTableFlags_Borders | ImGuiTableFlags_Resizable | ImGuiTableFlags_Reorderable | ImGuiTableFlags_Hideable))
                 {
                     ImGui::TableSetupColumn("B0");
@@ -6551,7 +6551,7 @@ static void DemoWindowTables()
         {
             for (int row = 0; row < 8; row++)
             {
-                float min_row_height = (float)(int)(TEXT_BASE_HEIGHT * 0.30f * row);
+                float min_row_height = (float)(int)(TEXT_BASE_HEIGHT * 0.30f * row + ImGui::GetStyle().CellPadding.y * 2.0f);
                 ImGui::TableNextRow(ImGuiTableRowFlags_None, min_row_height);
                 ImGui::TableNextColumn();
                 ImGui::Text("min_row_height = %.2f", min_row_height);
@@ -6655,9 +6655,10 @@ static void DemoWindowTables()
         ImGui::SameLine();
         if (ImGui::BeginTable("table3", 3, ImGuiTableFlags_Borders | ImGuiTableFlags_RowBg, ImVec2(TEXT_BASE_WIDTH * 30, 0.0f)))
         {
+            const float rows_height = TEXT_BASE_HEIGHT * 1.5f + ImGui::GetStyle().CellPadding.y * 2.0f;
             for (int row = 0; row < 3; row++)
             {
-                ImGui::TableNextRow(0, TEXT_BASE_HEIGHT * 1.5f);
+                ImGui::TableNextRow(0, rows_height);
                 for (int column = 0; column < 3; column++)
                 {
                     ImGui::TableNextColumn();