Added a new file missing from the previous commit.

src/slic3r_app_msvc.cpp

@@ -0,0 +1,79 @@
+// Why?
+#define _WIN32_WINNT 0x0502
+// The standard Windows includes.
+#define WIN32_LEAN_AND_MEAN
+#define NOMINMAX
+#include <Windows.h>
+#include <shellapi.h>
+#include <wchar.h>
+// Let the NVIDIA and AMD know we want to use their graphics card
+// on a dual graphics card system.
+__declspec(dllexport) DWORD NvOptimusEnablement = 0x00000001;
+__declspec(dllexport) int AmdPowerXpressRequestHighPerformance = 1;
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <string>
+#include <vector>
+
+typedef int (__stdcall *Slic3rMainFunc)(int argc, wchar_t **argv);
+
+#ifdef SLIC3R_WRAPPER_NOCONSOLE
+int APIENTRY wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, wchar_t *lpCmdLine, int nCmdShow)
+{
+	int 	  argc;
+	wchar_t **argv = CommandLineToArgvW(lpCmdLine, &argc);
+#else
+int wmain(int argc, wchar_t **argv)
+{
+#endif
+	wchar_t path_to_exe[MAX_PATH + 1] = { 0 };
+	::GetModuleFileNameW(nullptr, path_to_exe, MAX_PATH);
+	wchar_t drive[_MAX_DRIVE];
+	wchar_t dir[_MAX_DIR];
+	wchar_t fname[_MAX_FNAME];
+	wchar_t ext[_MAX_EXT];
+	_wsplitpath(path_to_exe, drive, dir, fname, ext);
+	_wmakepath(path_to_exe, drive, dir, nullptr, nullptr);
+
+// https://wiki.qt.io/Cross_compiling_Mesa_for_Windows
+// http://download.qt.io/development_releases/prebuilt/llvmpipe/windows/
+	wchar_t path_to_mesa[MAX_PATH + 1] = { 0 };
+	wcscpy(path_to_mesa, path_to_exe);
+	wcscat(path_to_mesa, L"mesa\\opengl32.dll");
+	printf("Loading MESA OpenGL library: %S\n", path_to_mesa);
+	HINSTANCE hInstance_OpenGL = LoadLibraryExW(path_to_mesa, nullptr, 0);
+	if (hInstance_OpenGL == nullptr) {
+		printf("MESA OpenGL library was not loaded\n");
+	}
+
+	wchar_t path_to_slic3r[MAX_PATH + 1] = { 0 };
+//	wcscpy(path_to_slic3r, path_to_exe);
+	wcscat(path_to_slic3r, L"slic3r.dll");
+	printf("Loading Slic3r library: %S\n", path_to_slic3r);
+	HINSTANCE hInstance_Slic3r = LoadLibraryExW(path_to_slic3r, nullptr, 0);
+//	if (hInstance_OpenGL == nullptr || hInstance_Slic3r == nullptr) {
+	if (hInstance_Slic3r == nullptr) {
+			printf("slic3r.dll was not loaded\n");
+		return -1;
+	}
+
+	// resolve function address here
+	Slic3rMainFunc slic3r_main = (Slic3rMainFunc)GetProcAddress(hInstance_Slic3r, "slic3r_main");
+	if (slic3r_main == nullptr) {
+		printf("could not locate the function slic3r_main in slic3r.dll\n");
+		return -1;
+	}
+
+	std::vector<wchar_t*> argv_extended;
+	argv_extended.emplace_back(argv[0]);
+#ifdef SLIC3R_WRAPPER_GUI
+	std::wstring cmd_gui = L"--gui";
+	argv_extended.emplace_back(const_cast<wchar_t*>(cmd_gui.data()));
+#endif
+	for (int i = 1; i < argc; ++ i)
+		argv_extended.emplace_back(argv[i]);
+	argv_extended.emplace_back(nullptr);
+	return slic3r_main(argc, argv_extended.data());
+}