UI.Combo

Name	Mandatory	Description	Default	Type
⬅️ Input		A sequence of values.		Any
Output ➡️		The selected value.		Any
Label	No	The text label of this combobox.	none	StringNone
Index	No	The index of the selected item.	none	IntVar(Int)None
Width	No	The width of the button and menu.	none	FloatVar(Float)
Style	No	The text style.	none	{Any}Var({Any})

A drop-down selection menu with a label.

Examples

Code

; Simple combo
GFX.MainWindow(Contents: {
  ; Setup
  GFX.DrawQueue = ui-draw-queue
  GFX.UIPass(ui-draw-queue) >> render-steps

  ; UI
  UI({
    UI.CentralPanel({
      ["α Α" "ω Ω"] | UI.Combo(
        Label: "Greek letter"
        Index: index
      ) | ExpectString >= letter
    })
  })

  UI.Render(ui-draw-queue)
  GFX.Render(Steps: render-steps)
})

[warning] Missing downlevel flags: DownlevelFlags(VERTEX_AND_INSTANCE_INDEX_RESPECTS_RESPECTIVE_FIRST_VALUE_IN_INDIRECT_DRAW)
The underlying API or device in use does not support enough features to be a fully compliant implementation of WebGPU. A subset of the features can still be used. If you are running this program on native and not in a browser and wish to limit the features you use to the supported subset, call Adapter::downlevel_properties or Device::downlevel_properties to get a listing of the features the current platform supports.
[warning] DownlevelCapabilities {
    flags: DownlevelFlags(
        COMPUTE_SHADERS | FRAGMENT_WRITABLE_STORAGE | INDIRECT_EXECUTION | BASE_VERTEX | READ_ONLY_DEPTH_STENCIL | NON_POWER_OF_TWO_MIPMAPPED_TEXTURES | CUBE_ARRAY_TEXTURES | COMPARISON_SAMPLERS | INDEPENDENT_BLEND | VERTEX_STORAGE | ANISOTROPIC_FILTERING | FRAGMENT_STORAGE | MULTISAMPLED_SHADING | DEPTH_TEXTURE_AND_BUFFER_COPIES | WEBGPU_TEXTURE_FORMAT_SUPPORT | BUFFER_BINDINGS_NOT_16_BYTE_ALIGNED | UNRESTRICTED_INDEX_BUFFER | FULL_DRAW_INDEX_UINT32 | DEPTH_BIAS_CLAMP | VIEW_FORMATS | UNRESTRICTED_EXTERNAL_TEXTURE_COPIES | SURFACE_VIEW_FORMATS | NONBLOCKING_QUERY_RESOLVE,
    ),
    limits: DownlevelLimits,
    shader_model: Sm5,
}
[warning] Context has 31 commandBuffers at release (0 released, 0 kept)
[warning] Context has 2 buffers at release (2 released, 2 kept)
[warning] Context has 5 textures at release (1 released, 5 kept)

 

Code

; Styled combo
GFX.MainWindow(Contents: {
  ; Setup
  GFX.DrawQueue = ui-draw-queue
  GFX.UIPass(ui-draw-queue) >> render-steps

  ; UI
  UI({
    UI.CentralPanel({
      ["α Α" "ω Ω"] | UI.Combo(
        Label: "Greek letter"
        Style: {color: @color(200 10 200)}
        Index: index
      ) | ExpectString >= letter
    })
  })

  UI.Render(ui-draw-queue)
  GFX.Render(Steps: render-steps)
})

[warning] Missing downlevel flags: DownlevelFlags(VERTEX_AND_INSTANCE_INDEX_RESPECTS_RESPECTIVE_FIRST_VALUE_IN_INDIRECT_DRAW)
The underlying API or device in use does not support enough features to be a fully compliant implementation of WebGPU. A subset of the features can still be used. If you are running this program on native and not in a browser and wish to limit the features you use to the supported subset, call Adapter::downlevel_properties or Device::downlevel_properties to get a listing of the features the current platform supports.
[warning] DownlevelCapabilities {
    flags: DownlevelFlags(
        COMPUTE_SHADERS | FRAGMENT_WRITABLE_STORAGE | INDIRECT_EXECUTION | BASE_VERTEX | READ_ONLY_DEPTH_STENCIL | NON_POWER_OF_TWO_MIPMAPPED_TEXTURES | CUBE_ARRAY_TEXTURES | COMPARISON_SAMPLERS | INDEPENDENT_BLEND | VERTEX_STORAGE | ANISOTROPIC_FILTERING | FRAGMENT_STORAGE | MULTISAMPLED_SHADING | DEPTH_TEXTURE_AND_BUFFER_COPIES | WEBGPU_TEXTURE_FORMAT_SUPPORT | BUFFER_BINDINGS_NOT_16_BYTE_ALIGNED | UNRESTRICTED_INDEX_BUFFER | FULL_DRAW_INDEX_UINT32 | DEPTH_BIAS_CLAMP | VIEW_FORMATS | UNRESTRICTED_EXTERNAL_TEXTURE_COPIES | SURFACE_VIEW_FORMATS | NONBLOCKING_QUERY_RESOLVE,
    ),
    limits: DownlevelLimits,
    shader_model: Sm5,
}
[warning] Context has 31 commandBuffers at release (0 released, 0 kept)
[warning] Context has 2 buffers at release (2 released, 2 kept)
[warning] Context has 5 textures at release (1 released, 5 kept)

 

---