我正在研究MFC项目和3d图形我正在使用opengl;
在OnDraw()函数中我编写了这段代码:
int idx1 = MarkerCoordinates[SourceMarkerIndex];
int idx2 = MarkerCoordinates[SourceMarkerIndex + 1];
int idx3 = MarkerCoordinates[SourceMarkerIndex + 2];
int idx4 = MarkerCoordinates[DestMarkerIndex];
int idx5 = MarkerCoordinates[DestMarkerIndex+1];
int idx6 = MarkerCoordinates[DestMarkerIndex+2];
glBegin(GL_LINES);
glVertex3f(idx1,idx2,idx3);
glVertex3f(idx4,idx5,idx6);
glEnd();
因为用户在运行时确定参数以定义骨骼我必须将参数传递给glVertex3f()(idxi,i = 1,2,...);但是这样,输出中没有行;如果我明确地将整数传递给glVertex3f,则绘制线条;
你能告诉我哪里错了吗?答案 0 :(得分:0)
调用Invalidate()函数来触发WM_PAINT消息,然后调用OnDraw()