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Fixed logging to clipboard on architectures where va_list are modified by vsnprintf (fixed #112)

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This commit is contained in:
ocornut 2015-01-14 13:01:53 +00:00
parent 5322224881
commit 3a20671802
2 changed files with 12 additions and 3 deletions
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13
imgui.cpp
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@ -1,4 +1,4 @@
// ImGui library v1.20
// ImGui library v1.21 wip
// See ImGui::ShowTestWindow() for sample code.
// Read 'Programmer guide' below for notes on how to setup ImGui in your codebase.
// Get latest version at https://github.com/ocornut/imgui
@ -1180,9 +1180,18 @@ bool ImGuiTextFilter::PassFilter(const char* val) const
//-----------------------------------------------------------------------------
// On some platform vsnprintf() takes va_list by reference and modifies it.
// va_copy is the 'correct' way to copy a va_list but Visual Studio prior to 2013 doesn't have it.
#ifndef va_copy
#define va_copy(dest, src) (dest = src)
#endif
// Helper: Text buffer for logging/accumulating text
void ImGuiTextBuffer::appendv(const char* fmt, va_list args)
{
va_list args_copy;
va_copy(args_copy, args);
int len = vsnprintf(NULL, 0, fmt, args); // FIXME-OPT: could do a first pass write attempt, likely successful on first pass.
if (len <= 0)
return;
@ -1191,7 +1200,7 @@ void ImGuiTextBuffer::appendv(const char* fmt, va_list args)
Buf.reserve(Buf.capacity() * 2);
Buf.resize(write_off + (size_t)len);
ImFormatStringV(&Buf[write_off] - 1, (size_t)len+1, fmt, args);
ImFormatStringV(&Buf[write_off] - 1, (size_t)len+1, fmt, args_copy);
}
void ImGuiTextBuffer::append(const char* fmt, ...)

2
imgui.h
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@ -1,4 +1,4 @@
// ImGui library v1.20
// ImGui library v1.21 wip
// See .cpp file for commentary.
// See ImGui::ShowTestWindow() for sample code.
// Read 'Programmer guide' in .cpp for notes on how to setup ImGui in your codebase.