在寫取程式的時候，發現無法讀取STL的檔案，請問有沒有高手可以指證一下我的宣告到底是哪裡出了問題， 應該要怎麼樣宣告才能夠順利讀取 Compiling... test.cpp Linking... test.obj : error LNK2001: unresolved external symbol "struct STriangle * __cdecl LoadStlASCII(char const *,int &)" (?LoadStlASCII@@YAPAUSTriangle@@PBDAAH@Z) Debug/test.exe : fatal error LNK1120: 1 unresolved externals Error executing link.exe. test.exe - 2 error(s), 0 warning(s) 下面是原始程式碼 #include #include #include #include #include "inputStl.h" // Rotation amounts static GLfloat xRot = 0.0f; static GLfloat yRot = 0.0f; //triangles STriangle * triArray = NULL; int nTriangles = 0; // Called to draw scene void RenderScene() { // Clear the window glClear(GL_COLOR_BUFFER_BIT); // Save matrix state and do the rotation glPushMatrix(); glRotatef(xRot, 1.0f, 0.0f, 0.0f); glRotatef(yRot, 0.0f, 1.0f, 0.0f); for (int i=0; i { glBegin(GL_TRIANGLES); glVertex3f(triArray[i].a[0], triArray[i].a[1], triArray[i].a[2]); glVertex3f(triArray[i].b[0], triArray[i].b[1], triArray[i].b[2]); glVertex3f(triArray[i].c[0], triArray[i].c[1], triArray[i].c[2]); glEnd(); } // Restore transformations glPopMatrix(); // Flush drawing commands glutSwapBuffers(); } void SetupRC() { // Black background glClearColor(0.0f, 0.0f, 0.0f, 1.0f ); // Set drawing color to blue glColor3ub(0, 0, 255); } void SpecialKeys(int key, int x, int y) { if(key == GLUT_KEY_UP) xRot-= 5.0f; if(key == GLUT_KEY_DOWN) xRot = 5.0f; if(key == GLUT_KEY_LEFT) yRot -= 5.0f; if(key == GLUT_KEY_RIGHT) yRot = 5.0f; if(xRot > 356.0f) xRot = 0.0f; if(xRot < -1.0f) xRot = 355.0f; if(yRot > 356.0f) yRot = 0.0f; if(yRot < -1.0f) yRot = 355.0f; // Refresh the Window glutPostRedisplay(); } void ChangeSize(int w, int h) { //GLfloat nRange = 1.9f; GLfloat nRange = 500.0f; // Prevent a divide by zero if(h == 0) h = 1; // Set Viewport to window dimensions glViewport(0, 0, w, h); // Reset projection matrix stack glMatrixMode(GL_PROJECTION); glLoadIdentity(); // Establish clipping volume (left, right, bottom, top, near, far) if (w <= h) glOrtho (-nRange, nRange, -nRange*h/w, nRange*h/w, -nRange*100, nRange*100); else glOrtho (-nRange*w/h, nRange*w/h, -nRange, nRange, -nRange*100, nRange*100); // Reset Model view matrix stack glMatrixMode(GL_MODELVIEW); glLoadIdentity(); } void main() { triArray = LoadStlASCII("Sammy1_ascii.stl", nTriangles); //triArray = LoadStlBinary("Sammy1_binary.stl", nTriangles); glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH); glutCreateWindow("STL Loading Sample"); glutReshapeFunc(ChangeSize); glutSpecialFunc(SpecialKeys); glutDisplayFunc(RenderScene); SetupRC(); glutMainLoop(); }

LoadStlASCII()函數其原型應在inputStl.h可找到該行 您的錯誤訊息為"unresolved external symbol" 表示編譯時inputStl.h已告知LoadStlASCII()函數原型 但在鏈結時錯誤 =>> 請找一下該函數有否提供相關之 *.lib或*.dll檔案吧 ! 祝順心~~~~~~~ yangkissktop

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