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Internals/experimental: BeginComboPreview(), EndComboPreview(). (#4168, #1658)

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(amended)
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ocornut
2021-06-15 15:16:39 +02:00
parent 98a6292165
commit 0cca0d1617
6 changed files with 101 additions and 3 deletions
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6
imgui_demo.cpp
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@ -1026,8 +1026,8 @@ static void ShowDemoWindowWidgets()
// stored in the object itself, etc.)
const char* items[] = { "AAAA", "BBBB", "CCCC", "DDDD", "EEEE", "FFFF", "GGGG", "HHHH", "IIII", "JJJJ", "KKKK", "LLLLLLL", "MMMM", "OOOOOOO" };
static int item_current_idx = 0; // Here we store our selection data as an index.
const char* combo_label = items[item_current_idx]; // Label to preview before opening the combo (technically it could be anything)
if (ImGui::BeginCombo("combo 1", combo_label, flags))
const char* combo_preview_value = items[item_current_idx]; // Pass in the preview value visible before opening the combo (it could be anything)
if (ImGui::BeginCombo("combo 1", combo_preview_value, flags))
{
for (int n = 0; n < IM_ARRAYSIZE(items); n++)
{
@ -1043,10 +1043,12 @@ static void ShowDemoWindowWidgets()
}
// Simplified one-liner Combo() API, using values packed in a single constant string
// This is a convenience for when the selection set is small and known at compile-time.
static int item_current_2 = 0;
ImGui::Combo("combo 2 (one-liner)", &item_current_2, "aaaa\0bbbb\0cccc\0dddd\0eeee\0\0");
// Simplified one-liner Combo() using an array of const char*
// This is not very useful (may obsolete): prefer using BeginCombo()/EndCombo() for full control.
static int item_current_3 = -1; // If the selection isn't within 0..count, Combo won't display a preview
ImGui::Combo("combo 3 (array)", &item_current_3, items, IM_ARRAYSIZE(items));