ImageButton does not responds to click in certain situations #4471
Comments
You likely have an ID conflict. There is a known flaw with You can surround your ImageButton() calls with PushID/PopID() calls, or use |
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Thank you for your answer. |
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FYI the old For reference: #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
// Legacy API obsoleted in 1.89. Two differences with new ImageButton()
// - old ImageButton() used ImTextureId as item id (created issue with multiple buttons with same image, transient texture id values, opaque computation of ID)
// - new ImageButton() requires an explicit 'const char* str_id'
// - old ImageButton() had frame_padding' override argument.
// - new ImageButton() always use style.FramePadding.
bool ImGui::ImageButton(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0, const ImVec2& uv1, int frame_padding, const ImVec4& bg_col, const ImVec4& tint_col)
{
// Default to using texture ID as ID. User can still push string/integer prefixes.
PushID((void*)(intptr_t)user_texture_id);
if (frame_padding >= 0)
PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2((float)frame_padding, (float)frame_padding));
bool ret = ImageButton("", user_texture_id, size, uv0, uv1, bg_col, tint_col);
if (frame_padding >= 0)
PopStyleVar();
PopID();
return ret;
}
#endif // #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS |
Also #74, #96, #480, #501, #647, #654, #719, #843, #894, #1057, #1173, #1390, #1414, #1556, #1768, #2041, #2116, #2330, #2475, #2562, #2667, #2807, #2885, #3102, #3375, #3526, #3964, #4008, #4070, #4158, #4172, #4199, #4375, #4395, #4471, #4548, #4612, #4631, #4657, #4796, #5210, #5303, #5360, #5393, #5533, #5692, #5707, #5729, #5773, #5787, #5884, #6046, #6093, #6186, #6223, #6364, #6387, #6567, #6692, #6724, #6939, #6984, #7246, #7270, #7375, #7421, #7434, #7472, #7581, #7724, #7926, #7937 and probably more.. Tagging to increase visibility!
My Issue/Question:
We have an application to manage meshes and materials in scenes. We show the hirarchy of the scene in a docked window and a sort of tree widget we had using the old column system. We noticed that with scenes with several meshes (50+) sometimes buttons to hide/lock the mesh did not work in this docked window even though it did not happen anywhere else. I thought maybe it was time to upgrade so I passed the column system to the tree widget system in the new version but keeps happening. It's not a problem with code because it just simply that you click some buttons and it returns false. The buttons are Imgui::ImageButton.
I could not reproduce writing a simple example but I will upload it just in case you want to see the structure of the gui that is more or less the same.
While I was writing the example I remembered the ImGui::IsItemClicked function, and when I use it after the ImageButton it responds correctly to my click so that is the workaround I'm using right now, but I thought it would be useful to inform about the issue.
Screenshots/Video
2021-08-20.08-58-02.mp4
Standalone, minimal, complete and verifiable example: (see #2261)
imgui-docking.zip
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