Examples: uses SetNextWindowPos/SetNextWindowSize when applicable

examples/directx11_example/main.cpp

@@ -188,7 +188,8 @@ int main(int, char**)
         // 2. Show another simple window, this time using an explicit Begin/End pair
         if (show_another_window)
         {
-            ImGui::Begin("Another Window", &show_another_window, ImVec2(200,100));
+            ImGui::SetNextWindowSize(ImVec2(200,100), ImGuiSetCond_FirstUseEver);
+            ImGui::Begin("Another Window", &show_another_window);
             ImGui::Text("Hello");
             ImGui::End();
         }

examples/directx9_example/main.cpp

@@ -115,7 +115,8 @@ int main(int, char**)
         // 2. Show another simple window, this time using an explicit Begin/End pair
         if (show_another_window)
         {
-            ImGui::Begin("Another Window", &show_another_window, ImVec2(200,100));
+            ImGui::SetNextWindowSize(ImVec2(200,100), ImGuiSetCond_FirstUseEver);
+            ImGui::Begin("Another Window", &show_another_window);
             ImGui::Text("Hello");
             ImGui::End();
         }

examples/opengl3_example/main.cpp

@@ -59,7 +59,8 @@ int main(int, char**)
         // 2. Show another simple window, this time using an explicit Begin/End pair
         if (show_another_window)
         {
-            ImGui::Begin("Another Window", &show_another_window, ImVec2(200,100));
+            ImGui::SetNextWindowSize(ImVec2(200,100), ImGuiSetCond_FirstUseEver);
+            ImGui::Begin("Another Window", &show_another_window);
             ImGui::Text("Hello");
             ImGui::End();
         }

examples/opengl_example/main.cpp

@@ -53,7 +53,8 @@ int main(int, char**)
         // 2. Show another simple window, this time using an explicit Begin/End pair
         if (show_another_window)
         {
-            ImGui::Begin("Another Window", &show_another_window, ImVec2(200,100));
+            ImGui::SetNextWindowSize(ImVec2(200,100), ImGuiSetCond_FirstUseEver);
+            ImGui::Begin("Another Window", &show_another_window);
             ImGui::Text("Hello");
             ImGui::End();
         }

imgui.cpp

@@ -9545,13 +9545,13 @@ static void ShowExampleAppAutoResize(bool* opened)
 
 static void ShowExampleAppFixedOverlay(bool* opened)
 {
+    ImGui::SetNextWindowPos(ImVec2(10,10));
     if (!ImGui::Begin("Example: Fixed Overlay", opened, ImVec2(0,0), 0.3f, ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoSavedSettings))
     {
         ImGui::End();
         return;
     }
 
-    ImGui::SetWindowPos(ImVec2(10,10));
     ImGui::Text("Simple overlay\non the top-left side of the screen.");
     ImGui::Separator();
     ImGui::Text("Mouse Position: (%.1f,%.1f)", ImGui::GetIO().MousePos.x, ImGui::GetIO().MousePos.y);