Add PoorManLog

src/hello_imgui/internal/backend_impls/abstract_runner.cpp

@@ -7,6 +7,7 @@
 #include "hello_imgui/internal/menu_statusbar.h"
 #include "hello_imgui/internal/platform/ini_folder_locations.h"
 #include "hello_imgui/internal/inicpp.h"
+#include "hello_imgui/internal/poor_man_log.h"
 #include "imgui.h"
 
 #include "hello_imgui/internal/imgui_global_context.h" // must be included before imgui_internal.h
@@ -441,11 +442,12 @@ void ReadDpiAwareParams(const std::string& appIniSettingLocation, DpiAwareParams
 void _LogDpiParams(const HelloImGui::DpiAwareParams& dpiAwareParams)
 {
 	auto &io = ImGui::GetIO();
-	printf("dpiAwareParams: dpiWindowSizeFactor=%f\n", dpiAwareParams.dpiWindowSizeFactor);
-	printf("dpiAwareParams: fontRenderingScale=%f\n", dpiAwareParams.fontRenderingScale);
-	printf("dpiAwareParams: DpiFontLoadingFactor()=%f\n", dpiAwareParams.DpiFontLoadingFactor());
-	printf("    ImGui FontGlobalScale: %f\n", io.FontGlobalScale);
-	printf("	ImGui DisplayFramebufferScale=%f, %f\n", io.DisplayFramebufferScale.x, io.DisplayFramebufferScale.y);
+	std::stringstream msg;
+	PoorManLog("dpiAwareParams: dpiWindowSizeFactor=%f\n", dpiAwareParams.dpiWindowSizeFactor);
+	PoorManLog("dpiAwareParams: fontRenderingScale=%f\n", dpiAwareParams.fontRenderingScale);
+	PoorManLog("dpiAwareParams: DpiFontLoadingFactor()=%f\n", dpiAwareParams.DpiFontLoadingFactor());
+	PoorManLog("    ImGui FontGlobalScale: %f\n", io.FontGlobalScale);
+	PoorManLog("	ImGui DisplayFramebufferScale=%f, %f\n", io.DisplayFramebufferScale.x, io.DisplayFramebufferScale.y);
 }
 
 

src/hello_imgui/internal/poor_man_log.cpp

@@ -0,0 +1,31 @@
+#include <string>
+#include <cstdio>
+
+namespace HelloImGui
+{
+	std::string _DoSnPrintf(const char* fmt, ...)
+	{
+		va_list args;
+		va_start(args, fmt);
+		char buffer[2000];
+		vsnprintf(buffer, sizeof(buffer), fmt, args);
+		va_end(args);
+		return std::string(buffer);
+	}
+
+
+	void PoorManLog(const char* msg, ...)
+	{
+		// call _DoSnPrintf
+		va_list args;
+		va_start(args, msg);
+		std::string buffer = _DoSnPrintf(msg, args);
+		va_end(args);
+
+		#ifdef _MSC_VER
+		OutputDebugStringA(buffer.c_str());
+		#else
+		printf("%s", buffer.c_str());
+		#endif
+	}
+}

src/hello_imgui/internal/poor_man_log.h

@@ -0,0 +1,4 @@
+namespace HelloImGui
+{
+	void PoorManLog(const char* msg, ...);
+}