Two or more buttons with the same caption, only the very first could be triggered

[YukinoHayakawa]

For example,

ImGui::Text("ObjectA");
if(ImGui::Button("Remove")) remove(0);
ImGui::Text("ObjectB");
if(ImGui::Button("Remove")) remove(1);

remove() will never be called with 1, even if it is wrapper in a CollapsingHeader.

[Flix01]

   - When passing a label you can optionally specify extra unique ID information within string itself. This helps solving the simpler collision cases.
     use "##" to pass a complement to the ID that won't be visible to the end-user:
       Button("Play");         // Label = "Play",   ID = hash of "Play"
       Button("Play##foo1");   // Label = "Play",   ID = hash of "Play##foo1" (different from above)
       Button("Play##foo2");   // Label = "Play",   ID = hash of "Play##foo2" (different from above)

[ocornut]

Read the FAQ please.

[jarikomppa]

Please read FAQ (and well, all documentation) in
https://github.com/ocornut/imgui/blob/master/imgui.cpp

On Friday, January 22, 2016, Flix notifications@github.com wrote:

• When passing a label you can optionally specify extra unique ID information within string itself. This helps solving the simpler collision cases.
  use "##" to pass a complement to the ID that won't be visible to the end-user: Button("Play"); // Label = "Play", ID = hash of "Play" Button("Play##foo1"); // Label = "Play", ID = hash of "Play##foo1" (different from above) Button("Play##foo2"); // Label = "Play", ID = hash of "Play##foo2" (different from above)

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#501 (comment).

[YukinoHayakawa]

well you guys act really quick. thank you.