Imgui: SetWindowSize not work

[CesaragsUC]

I new in Imgui, so i use the source to made my custom menu using dx11.
I get problem here that, even if i define a size width and height for the window not work.

sorry my bad english.

    // Our state
    bool show_demo_window = true;
    bool show_another_window = false;
    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);

     float ImGuiWidth = 100.f;
     float ImGuiHight = 100.f;

     float ImGuiWidth = 100.f;
     float ImGuiHight = 100.f;
     // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
        if (show_demo_window)
            ImGui::ShowDemoWindow(&show_demo_window);

        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
        {
            static float f = 0.0f;
            static int counter = 0;

            auto& style = ImGui::GetStyle();
            bool placeholder_true = true;

            // not work =/, kepp the  defult size windows
            ImGui::SetWindowSize(ImVec2((float)ImGuiWidth, (float)ImGuiHight));


            ImGui::Begin("Hello, world!",0, ImGuiWindowFlags_NoResize);                          // Create a window called "Hello, world!" and append into it.

            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
            ImGui::Checkbox("Another Window", &show_another_window);
        }

[BrutPitt]

Hi @Cesar1986BR

if you read prototype in ImGui.h:

    IMGUI_API void          SetWindowSize(const ImVec2& size, ImGuiCond cond = 0);                      
// (not recommended) set current window size - call within Begin()/End(). set to ImVec2(0,0) to force an auto-fit. prefer using SetNextWindowSize(), as this may incur tearing and minor side-effects.

In particular it says: call within Begin()/End()
Anyway use SetNextWindowSize() before Begin(): that's just what you need!

IMGUI_API void          SetNextWindowSize(const ImVec2& size, ImGuiCond cond = 0);
// set next window size. set axis to 0.0f to force an auto-fit on this axis. call before Begin()

Just a little note:
Begin() needs to End() (at the end of the window commands/widgets)... and I don't see it before closed brace }

[CesaragsUC]

@BrutPitt thx

[ocornut]

Closing this as solved. Thank you Michele for the help!