X-Git-Url: http://git.tdb.fi/?p=libs%2Fgui.git;a=blobdiff_plain;f=source%2Fgraphics%2Fwgl%2Fglcontext.cpp;h=68088970ac13cab32cd856a2a23980d838ad3bf7;hp=ebca3f1912ef9ee67e1570c41ae71e98c5cb281f;hb=0d205a19dc087768da1e803d8dfde27f12cb9d99;hpb=1d0d0b91c1df8b563d1f8817e042ebdc06762236

diff --git a/source/graphics/wgl/glcontext.cpp b/source/graphics/wgl/glcontext.cpp
index ebca3f1..6808897 100644
--- a/source/graphics/wgl/glcontext.cpp
+++ b/source/graphics/wgl/glcontext.cpp
@@ -7,6 +7,16 @@
 
 using namespace std;
 
+namespace {
+
+template<typename T>
+T get_proc(const char *name)
+{
+	return reinterpret_cast<T>(reinterpret_cast<void *>(wglGetProcAddress(name)));
+}
+
+}
+
 namespace Msp {
 namespace Graphics {
 
@@ -48,7 +58,7 @@ void GLContext::platform_init(const GLOptions &opts)
 		ContextHandle fake_context = wglCreateContext(dc);
 		wglMakeCurrent(dc, fake_context);
 
-		PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribs = reinterpret_cast<PFNWGLCREATECONTEXTATTRIBSARBPROC>(wglGetProcAddress("wglCreateContextAttribsARB"));
+		PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribs = get_proc<PFNWGLCREATECONTEXTATTRIBSARBPROC>("wglCreateContextAttribsARB");
 		if(!wglCreateContextAttribs)
 			throw unsupported_gl_mode(opts);
 
@@ -100,7 +110,7 @@ GLContext::~GLContext()
 
 void GLContext::set_swap_interval(unsigned i)
 {
-	PFNWGLSWAPINTERVALEXTPROC wglSwapInterval = reinterpret_cast<PFNWGLSWAPINTERVALEXTPROC>(wglGetProcAddress("wglSwapIntervalEXT"));
+	PFNWGLSWAPINTERVALEXTPROC wglSwapInterval = get_proc<PFNWGLSWAPINTERVALEXTPROC>("wglSwapIntervalEXT");
 	if(!wglSwapInterval)
 		throw runtime_error("wglSwapIntervalEXT not found");
 	wglSwapInterval(i);