Drag and Drop: Allow NULL payload (since type only can be useful). (#143)

7 years ago · b1653cd361
parent b6504b8eee
commit b1653cd361
1 changed files with 1 additions and 1 deletions
--- a/imgui.cpp
+++ b/imgui.cpp
@ -10742,7 +10742,7 @@ bool ImGui::SetDragDropPayload(const char* type, const void* data, size_t data_s

    IM_ASSERT(type != NULL);
    IM_ASSERT(strlen(type) < IM_ARRAYSIZE(payload.DataType));       // Payload type can be at most 8 characters longs
-    IM_ASSERT(data != NULL && data_size > 0);
+    IM_ASSERT((data != NULL && data_size > 0) || (data == NULL && data_size == 0));
    IM_ASSERT(cond == ImGuiCond_Always || cond == ImGuiCond_Once);
    IM_ASSERT(payload.SourceId != 0);                               // Not called between BeginDragDropSource() and EndDragDropSource()